TMI but have a serious question!!

I am posting this anonymously because I don't want to embarrassing my hubby anyone around me knows I talk about it freely but he feels very uncomfortable! We have 3 boys one set of twins and we are currently planning our 4 and final child. OK so when I first child was born he was diagnosed with diabetes since then our sex life has gone downhill he doesn't keep it controlled and he has serious problems 'keeping it up' this last week I joined this app and started tracking my ovulation. Of course sex didn't go like I planned cause nothing seems to work with his diabetes not level! So I have resorted to using the turkey baster method. He cause still relieve himself without getting hard and I get the little swimmers I need I put it in a sterile cup and syringe it in! My question is are there moms out there that have tried it and had success