My quads are out for some time now. I don't intend to inject butt.

I'm doing a TRT and have to inject twice a week. Is it possible with delts only/? Dosages 20ml per injection (40mg of T).

I would think about rotating it like: mid right delt, mid left delt, front right delt, front left delt.

What do you think? Would it be an overkill for the delts?