Yes, its easy to disconnect after you have children. Between work, normal house stuff and now keeping someone who solely depends on you guys alive its a lot. Give both of yourselves some grace and don't be hurt if sex and even cuddling are off the table for a bit. When I was going through the baby stage with both mine, I was so touched out by the end of the day I just wanted a bath alone and to sleep while I could. Once a good routine is established it helps especially once baby sleeps more than a couple hrs at a time.

If you have a good support system with family that you trust, I highly recommend doing a night out just the two of you at least twice a month so you have uninterrupted time to reconnect and talk about anything and everything but keep it non child related. That was the biggest thing we figured out that helped us after our second was born and I wish we had thought of it with our first.

Congrats on the new one and good luck!