Need advice on establishing boundaries with MIL

I have a controlling MIL as a lot of us do. Before I was pregnant, I was too scared to stand up for myself or put my foot down. Now that I am pregnant, I am territorial as hell and have had no problem saying what I need to say to her. I do worry for the future when I have my baby for the first time. What boundaries have you had to set with your MIL? What do I need to watch out for? Any other advice?

She’s very comfortable overstepping boundaries, planning things for my unborn baby without involving me, telling me things like, “your kids don’t need a pacifier, my kids NEVER needed a pacifier”…blah blah typical old lady behavior :/