Breathing while giving head?

So i’ve recently given my boyfriend head for the second time. the first time it wasn’t that great because i psyched myself out and ended up stopping too soon. the second time, he said it was really good, the only issue was i kept stopping to take breaks to breathe in between. he said every time i stopped was when he was almost at climax point. What do i do? especially since he holds my head and bobs it up and down for me.