Idk what to do

So my current boyfriend is my first boyfriend in over a year, my last break up took me forever to get over.

Last week my current boyfriend and I had time to ourselves and I have him head, this was my first time giving head in over a year and this guy doesn’t like the same things my ex did.

He likes it very fast and deep and I found myself having to stop after a short while because I was gagging and I couldn’t breathe.

Any tips on how to stop gagging and how to breathe while going down on him?