In everybody's life there is ebb and flow in sexual activity. There can be medical, physical or just moo fluctuating with reasons or without reasons. Monotony is also one of the factor. One can do some exercises to boost up sexual hunger. Google breathe to orgasm. Simultaneous breathing, alternate breathing and circular breathing. This technique create new environment increasing libido and quality or orgasm. You can use kegel exercise and ask him to do it. (you can kegel each other alternatively.) It gives different sensation to your hubby and it allow to grip his penis in tight manner.There are many techniques to improve each sexual activity.Even using toys is quite okay.If you talk tactfully, ( he should not feel that you are pressurizing him), he can take up some improvement activity. Google the above words. one kegel or breath to orgasm.
Say What ?? Talk to him ..lol! Jk:)
Its just a tricky thing to talk about and not exactly sure how to brg it up with out insulting him or embarrassing him!
I also wonder if drinking could be a factor here or something medical like high blood pressure? Can't remember last time he actually went to a doctor for a check up?
You should speak with him, each persons drive is different.