Advice on spicing up sex please.

Hello, So me and my boyfriend have been together 11 months. And we have great sex, but lately it doesn't seem as special as it did. He loves me and I love him. I know that but idk what's happened. Also he can't cum from a bj or hj or both. He says it's where he's use to doing the deed himself and he's insecure. He has no reason to be and I told him that. So with that said, any oral advice or positions to make him feel really good?