No sex in 7 month relationship

So my bf and I have been together for 7 months (3 months dating casually before that) and we haven’t had sex.

I’m a virgin so for awhile we waited, but now I’m just confused on why we don’t have sex.

I’ve given him head but it’s been almost 3 months since the last time.

How do I handle this and have a productive conversation?

(He’s previously told me he doesn’t need a lot of sex)