Feeling really down

My marriage is so all over the place. My husband is going through anxiety and was doing better for a bit, but stopped taking his meds and going to his counselor without telling me and we’re right back at square one. He got a new job back in June and it’s such a better place for him to be. But he’s so stuck on his old job and having regrets that maybe he just didn’t try hard enough there to make it a good place for him, and is blaming me for all his issues now because I encouraged him to look elsewhere. I’m completely overloaded with his bipolar behavior. Today he told me he’s not sure he wants to stay at his job anymore and wants to go back to his old one. Not only is that a bad idea because he was under a verbally and emotionally abusive supervisor, he literally cannot have the job back. It no longer exists. We’ve had this conversation weekly and he’s not even giving this new job a chance because he’s so hung up on the old one. Quite frankly it feels like a bullet to my chest that he’s going back to this again because I’ve sacrificed everything for him the past few months. I know you’re supposed to make sacrifices in a marriage relationship but I can’t keep it up at this level anymore. I asked him to find somewhere else to stay for a few nights because I just have to set some boundaries for myself. I’m struggling to keep up with my own job and my toddler because I’m co scantly dealing with his issues. Am I mean for doing that?