Inmates in the TDCJ must serve 85% of their sentence. A 36 month sentence means that he will have to do 30.6 months. If he has done 24 already he is near the door. Normally the time spent in county counts as time off this sentence. We wonder if the sentence was different that you heard or if there are concurrent charges. Inmate movement from unit to unit is not unusual. It might be for something good or something bad, don't read too much into it.
If you want to send us their name and TDCJ number we will be happy to check on his out-date
https://www.inmateaid.com/ask-the-inmate/how-much-more-time-will-my-inmate-have-to-do-before-a-parole-hearing#answer
Accepted Answer Date Created: February 19,2016