Yeh, but now your injuries are healing, and you've pulled back from your medication. This is the point when your brain is itching for that tickle that the Oxy and the benzos have been giving you since your accident.
I think you need to double down right now, not give in and go back to where you were. At some point you're going to have to let your brain and body be uncomfortable with no numbing effects from pharmaceuticals or alcohol.
It makes sense that you're trying to recapture the feelings you had. I hope you finally "get" what you're up against. It's a physical need you have created by abusing these substances. It's probably a genetic thing, since your dad got hooked too. The only way out is . . . wait for it. . . continuous abstinence. Then the healing can take place.