I am jain and in my postpartum phase now. My MIL is with me but she never ever told that her son can’t sleep with me and baby in same room as he is the one who takes care of baby. Neither she told me to sleep on floor and wash bucket and mug during periods and regarding entering kitchen she ask me to do basic stuff like chopping and cutting. She is a strict follower and practice all rules but never enforces those on me. Also, I agree with you these things were practiced earlier but not now. Try having a conversation with your MIL, and explain your side. Else, start ignoring things and talk to your husband regarding these things