I don't know if there are programs for adults (and also if there are, where you live). I know when my child was diagnosed here in Australia years ago there was a program to help with social skills - recognising facial expressions, greeting people etc. It was really helpful.
(Edited) Sorry - you actually said you can't afford another therapist... My suggestion was to do that work with a therapist (as
@Fino suggested before too). If you find you can manage that then go for it.
Otherwise, why don't you google to see if there are programs in your area, or call an ASD specialist clinic or doctor and ask them if they know anywhere. Another idea might be a support group. There you could swap information and also practice your skills.