my bf/bd has anxiety about this

Kimmy • Soon to be mama of two ❤️
My boyfriend/baby's father and me suffer from anxiety and depression. I'm medicated, he's not. Ever since we found out about our little bundle of joy, he's back and forth about being happy about it and then changes to that he doesn't want it. Tonight he begged me to get an abortion. I put my foot down and said no. He says he's not ready to be a father but like I said, he's back and forth about this. 
Also he was a long time weed smoker. He smoked frequently but stopped once we got the news. He says the withdrawals from not smoking is amplifying his anxiety. 
Any suggestions or advice?