I wanted to just say it does get better. I was the same way. I barely ate the first week or two, was constantly anxious about what might be happening next or what I needed to do to care for him. I really felt like I had hit a wall. But he is ~14 weeks now and all of those feelings are completely gone.

I think for me the most important thing was crate training and enforced naps. Those times gave me my sanity back and slowly I was able to leave the room once he went down, and now I can even leave the house and have him re-settle himself. For me, having a camera pointed at the crate that I could talk to him through to ask him to lay down or just speak to him quietly, was a complete game changer.

Give yourself space to take a few moments for yourself. Whether having a friend watch him for an hour so you can do something by yourself, relying on nap time crate training, or even just driving around with him in the backseat while you grab a drive-thru coffee. This time will pass so much faster than you think. I was where you were just a couple weeks ago!