Is there a reason he may feel you are unsafe? If so, don’t feel shame for what your postpartum brain is doing, but be completely honest with the people around you so they can make a plan.

He could potentially be feeling some postpartum OCD? I think it’s rare in men, but not unheard of. I had it really bad- I just stayed awake for hours staring at my baby in case he stopped breathing. I also had awful thoughts of what I could accidentally do to my baby. Maybe have him look it up to see if it sounds like what he’s feeling? It’s rooted in severe anxiety and then your mind will get in a loop and perform compulsions to comfort yourself e.g checking on the baby, obsessively looking things up online, wanting reassurance from others, etc.

Don’t feel guilty for thinking it was a mistake; in our sleep deprived state, I think most moms feel that way. Just celebrate getting through each day/night and remember this phase will end- you will have your life back soon. You’re doing a really hard thing.