Blanket in Bassinet

Long post, I apologize....My LO is 3 months old and has not started to roll over yet. Right now she sleeps 10 hours each night and has been doing so since she was about a month and a half old and I started putting s blanket on her feet at night. She is a squirmy sleeper so I have her in a sleep sack to hold her arms tight but without a blanket on her legs for “weight” she moves them around too much and wakes herself up. Since the night I started doing the blanket she has slept 9-10 hours straight. Lately she has been squirming so much that she squirms down into the blanket so that in the morning she always has it up near her face but not covering it. My husband is supper worried about her suffocating and SIDS and has decided he doesn’t want her to have the blanket which I understand. However when she sleeps without the blanket she doesn’t sleep. She’s up almost every hour moving around. He is a heavy sleeper and doesn’t hear her most times so it leaves me to be up with her all night. So I need ideas..I finally told him tonight that he either needed to stay up and help me every time she woke herself up or I needed to put the blanket on her because I’m exhausted and so is she from not sleeping. He opted for the blanket rather than be up all night. So any help with ideas on how to keep her from wiggling and also keeping her as safe as possible would be appreciated. I don’t need negative comments on the blanket thing. I’m doing the best I can and everyone is different as well as their child is different. Just looking for ideas on a safer sleep while also keeping her on her nice 10 hour sleep schedule.