Partners mom controlling partner

Okay, so I am in need for some advice on this situation. My partners mom is extremely controlling and HATES me. She manipulates him and lies to him. When we tried to move in together, she almost fought me while I was 7 months pregnant. She started shoving at me at this apartment complex office and forced my partner in the car with her to go. My partner got overwhelmed and didn’t even want the apartment anymore because his mom acted so bad and wouldn’t even let me be alone with him so that I wouldn’t “change his mind”. We were at a family gathering and one of his family members bought up marriage between me and him since we have a baby together and his mom immediately was like no. My boyfriend didn’t say anything. His mom also asked to take my baby for 6 months and my mom keeps warning me that she could be building a cps case against me to take the baby. His mom also said before I went in labor “I don’t know if y’all will be good parents, but I know that I will be a good grandparent”. Me and my boyfriend planned a trip and she literally would not let him go. (he is 20 years old !!). She called him a young teenager. The reason she didn’t want him going is because of me, because she doesn’t want him spending any money on me. It was to the point he cancelled the trip and was afraid to leave the house. She also tries to take his money and keeps bugging him to get a joint bank account with my boyfriend and is always trying to make sure I don’t have a joint bank account with him. She literally controls him and he seems terrified of her. She won’t let him move out, or do anything. She will literally call him at 10:30 pm and tell him to come home. She almost has my boyfriend trained to do everything she tells him, like it’s out of control . Once she wanted my boyfriend to rub lotion on her feet and instead of asking her husband who was sitting right there, she asked my boyfriend and my boyfriend said he was uncomfortable and she asked him to do it (he did it still) multiple times. I ordered him doordash once and it said my name and when she seen my name, my boyfriend says she slammed the bag down. My boyfriend and I can’t move on in life as a family because of his mom and how he will do anything she tells him and how she’s also abusive. She once even bragged about how “If I tell my son to get down and massage my feet, he would”. At this point there could be a possibility that she could be building a cps case against me, what should I do to protect myself from her craziness? I also don’t know how to make it known that she is abusive because I have made it clear and explained it atleast 50 times to him, and he still just lets her treat him any king of way. He really wants to move out but scared of what his mom does. (She goes to extreme measures to get what she wants and will not take no for an answer)