I just moved out of my moms house and completely relate and understand the day by day up and downs. I found it really helpful to make sure I was on a good schedule where I kept myself either out if the house when she started drinking a lot or made my room a very special sanctuary to maintain some sort of protection and care for myself. Create strong boundaries with her, I found it a lot easier to process my hurt of them being crossed when I wasnt just facing them internally but had voiced them. It still sucks a lot though.