Borderline personality disorder 😨

hi, my name is jelly and I have borderline personality disorder. I'm 28 years old and up until 2 years ago I was misdiagnosed with bipolar, So I'm new to this whole side of things. I've always understood the.mood swings and pushing people away, turning on them and so on. But I need to know how do you control it?? Just because I know of them doesn't make them less brutal. I have a 1year old that I struggle to get out of bed to look after some days I just crumble and lock myself away for days on end and stay in bed in the dark. I'm working on a therapist locally but until then if there anything I can do to help?? Music is a massive controller, gardening is good for distractions but otherwise I'm lost i feel myself spiralling 😞