My brother sucks

I've(45f) been my moms(73f) caretaker for about 4 years. In short order, my brother(40) was doing meth with mom until she had a stroke and multiple heart attacks. So they both made horrible decisions, and I'm the one picking up the pieces. I'm not mad at mom. It does no good, she's sorry, appreciative and all that.

My brother did get clean after mom's downfall. He's got a job, had kids and has his stuff figured out, except for helping with mom. Somehow he feels no guilt. Mom was 20 years clean. My brother began using in her home. And the rest is history. I'm not saying my brother lays full responsibility for my mom's relapse, but it was a joint venture.

I don't expect him to takeover as mom's caretaker, but he won't even pitch in an hour. He'll call with his progress, which I am proud of. But like tonight mom started to tell him how she had a bad day, she lost her balance and fell. Now she's sore. Before she finished the sentence, he had to go and hung while she was mid sentence.

I done expect a lot, but listening, so she feels heard.... would really help me. I'm gonna spend the next 3 days listening to her commiserate about what a horrible mom dhe was. 2 more minutes of i hear you and hope you do better would help both of us.

I call my brother and explain this to him, his response was tell her I'm busy. But that he loves her. He can take 2 minutes to say it. How did that, also become my job?