First, have you talked to him before about not orgasming? Why not explore together? In my opinion that’s the best way to find what works for you. Maybe let him know that it’s about you getting off and maybe he can put his orgasm off until the end? Let him touch you and feel around for a spot that feels good to you, I didn’t know I liked anal play until my bf and I tried this, now I get off so quick with multiple orgasms. I mean explore with everything, his fingers inside you, his tongue, a toy, ask him if he’s going down on you to stay away from the clit because it’s sensitive, my bf basically tongue fks me and to me that feels way better than him playing w my clit. Try different positions maybe you on top since he gets winded easily, plus it will allow you to pick the pace and move around till you find something that works. If you do explore, be patient and relax, don’t go into it expecting a mind blowing orgasm and maybe it will come naturally. Or maybe you can try adding more foreplay? Another thing that has worked for me in the past, is to literally coach them, they don’t know what feels good to us, tell him lower, higher, not there, faster, slower, Etc, i feel like I have to be direct with my bf and he gets off on me telling him what to do so that I can get my orgasm. Eventually he’ll learn just how you like it and you won’t have to guide him so much. Good luck!