sex tips for guys with thick dcks?

Any sex tips for a guy with a lot of girth? We tried different positions but so far the only one that worked was missionary with my butt on a cushion to lift my pelvis up. Lube helps to an extent but he says it desensitises the feeling for him so could try another lube but I'm not sure? I've never had an issue fitting guys in before but he is incredibly thick (not seen anything like it 😂) and gets pretty long when really hard 😂