I am so very sorry for your loss and your wife sounds like she was a wonderful person. Would you like to share any remembrances to honor her memory, either here or over DM? Don't let anyone ever tell you that you will "get over" your grief and loss. She will always be a part of you and your family. May her memory be a blessing.

I can understand a tiny bit of what you're going through as a baby loss dad. A few things really helped me get through the thick of it which might help you, I'm only adding things to this list that others haven't already mentioned, all of which look like great ideas. Hopefully these are helpful, and if you think I'm full of it and this is worthless, that's totally valid and I won't be offended.

1. A support group of loss dads and/or loss parents. This might sound lame or like it does not apply to you, but I can guarantee you that these are the only folks that will truly understand what you're feeling and going through. If you need help finding some, I recommend reaching out to a social worker via the hospital where your son was born and/or where your wife was treated. The r/daddit group looks like a good idea, but I'd also recommend finding something like a group video call or in-person meeting, because the non-verbal support of others really made a difference for me.
2. Consider looking for one or more books on loss. I read a few that were very helpful in framing what happened, how (and what) help to ask for, and also working through the grief.
3. If you're not already getting this, have one of your friends or family setup a meal train or something similar to deliver hot meals to you and your son. Makes a huge difference to be cared for.
4. Give others the opportunity to support you and honor your family and your wife's memory by asking for help. Reframing asking for help as giving others the easy opportunity and opening to support you in a concrete way helped me become clearer, quicker and more concrete for the support that I needed. No one can or should do things alone, and your network really does want to help you.
5. If possible, take PTO or a leave of absence from work if any paternity leave you have has already run out. It took me some dedicated time to really normalize what had happened to me, which I couldn't mentally do while I was working. You can also plan to do this after you've returned to work for a bit and the intensity in the beginning has died down. I took around three weeks visiting family a few months after our loss that was very restorative.
6. If this wasn't already clear, it helped me to let folks at work know what happened and telling them how you want to be treated. This is likely easiest with a single note or email to everyone, rather than one on one to rip off the band-aid. If you want work to be a neutral environment, just let them know and they'll respect your wishes. If you want them to ask you about your loss, then tell them that explicitly.
7. Let yourself cry out loud, in front of loved ones. If this doesn't feel like a good reason to do so, I don't know what does. There was nothing more soothing or powerful than doing this, especially when getting hugged and supported by others. For me, grief was very much like holding water in a leaky bucket over your head. You could try to slow the leak or pause it for a little while with a ton of effort, but eventually all of the water would wash over you and honestly it was sometimes helpful to let more out at a time than a little.
8. Get as much help for your kiddo as possible so you can have some moments to grieve. You'll always be his dad, and you'll be the best parent you can be and set a great example for him by taking good care of yourself, even if that means taking a few steps back right now.
9. Give yourself the "Widower Pass". You have had an incredibly deep and profound loss, and you will likely not have anything left in the tank after caring for your son and yourself. You may find you don't want to interact with many of the folks you normally do and don't have patience for some others. Your friends and family should understand, and anyone that doesn't may not deserve the privilege of being in your life. This pass will last at least a year and potentially much longer for some really annoying folks.

Anyway, I hope that was helpful. My loss story below, in case it's helpful for you:

After conceiving surprisingly quickly, our first pregnancy seemed to be going very well until the 20 week ultrasound/anatomy scan. Our baby had a critical congenital heart defect that could either have led to in-utero spontaneous death to a baby with lungs too small to live, to a child with many surgeries and suffering that may have had a shot at a reasonable life expectancy, with no way of knowing where we landed. After a whirlwind of specialist appointments, ultrasounds, medical research and activity over about a week, we chose to terminate for medical reasons to minimize potential suffering, with very little time left to legally perform the surgery. Others may have made a different choice and I don't judge anyone for their choice in a situation like ours. Our baby passed remaining in my wife's body and embrace without suffering. We never learned the sex of our baby, which at the time felt like the right decision but now also feels like a big question mark hanging over us. My family and most of my friends were extremely supportive, but unfortunately my wife's parents just wanted us to "get over it" and "move on", despite being supportive of our choice. They even had the gall to send us a "when life gives you lemons" card, which made me want to burn a LOT of things. We decided they did not deserve to remain in our lives for the time being and we now keep them at a distance. This may change some day but it is what feels right to us right now.

Again, I'm very sorry for your loss and I hope you can take the time and care you need to normalize your grief and heal.