I want to remain separate from my husband

I got married on 18th January 2021, we have a baby of 9months. But our marriage is not a stable one. My in-laws are intimidating. They manipulate my husband over phone. There are instances when I have heard them speaking to my husband that he should scold me. During my pregnancy, when I was given bed rest for 2 weeks, he left me with my mother and father for his home during puja, the time when I needed him the most. After delivery of my baby, I wanted to do upsc and took coaching, but he and his family are not supportive at that thing. Every second day they find out way to disturb my mind. And after that for next 2-3 days I can't concentrate on my studies. Like this I am lagging behind most of the students of my batch. I just wanted some time to get some stable job, but he and his family don't allow me the time. So I started to live with my parents, but on 2nd August, he took the baby in his car to his aunt's house, which is 10kms away from my house, that took alone, without even informing me, nor taking anyone with him.my baby is just 9months old. He needs milk every 2hours. But my husband took him at around 5.00pm and brought him back at around 9.30 pm. I fear if that day some bad luck would have caused any accident or anything, what would have happened to my little baby. He doesn't even fit to the seat belt. I fear that my husband would take such a step again, if I don't take any action on my part. So I want to live separately. What do I do???