1. A urologist may have some ideas. For instance there is a new therapy that uses microwaves which anecdotally has produced results. Your husband may be a suitable candidate for this.
2. Perhaps use of erotic toys might supply the feel of penetration you miss.
3. I assume he has not loss the use of his tongue.
4. These ideas and others can be discussed with a sex therapist (which I am not).
All of this assumes that it is only the sexual component that needs to be restored. You say you work two jobs and pay most of the bills. If he is physically incapacitated other than sexually, that raises other issues. Figuring out how he can financially contribute would greatly help you and the relationship.