If you get sent to prison on a violation of probation can you still try to get reinstated while in prison?

My boyfriend is on ten years of papers for a drug felony drug charge. He violated his probation and has been In jail for 5 months. He was suppose to get a court date to try to get reinstated in two more weeks and the bus came to pick him up for prison. He just found out that his parole eligibility is suppose to be next year. Can his lawyer still try to get him reinstated at his actual court date in two weeks even tho he’s in prison now?