1st thing first. If you battling injury you need to rest. Don't know what kind of injury you have but. You're not going to get any better practicing/playing injured. Especially if its a debilitating one such as knees and ankles.
Also let us know your size and weight, and what you excel at on the court.
Ex: Post up, midrange, 3 ball ect...
Once i get that info I'll be glad to help out.