Going down.... or lack there of...

At the beginning of my relationship o had to tell my now boyfriend that I wasn’t comfortable with him going down on me yet because of some past trauma it takes a lot of vulnerability for me to be able to enjoy it without feeling dirty or guilty. We are 6 months later much more serious but now he does not try. I don’t know the right way to tell him I’m (more than) ready for my turn. It feels weird asking because I don’t want to feel like I’m forcing it bc then I will still be in my head. Advice on bringing that topic up without making things worse? I just want in on the orgasming too ya know 😂