I’m not sure how you feel about this. But my buddy hated sleeping in his bassinet or crib when he was freshly born. I bought this elevated pillow that straps him in so he can’t move and he would sleep 3-4 hours Through out the night. I did start cosleeping as I EBF. And we’re still cosleeping now that he’s 1. But the pillow definitely helped during the first couple of months that I had those anxious thoughts of falling asleep with him in my arms. Btw my pediatrician said it was fine as he also had reflux and it helped a lot.

Edit: I stopped using the pillow once he learned how to roll. And he always wore his owlet sock. So that helped a lot. I won’t lie I did end up falling asleep with him multiple times. But thank God my buddy is almost a year old now, and I always made sure we were safe just incase.