When a release date is posted in the system, that date already reflects everything working in his favor. Good time credits, program completions, and any other reductions the facility has applied are all factored in before that date gets set. The February 16 date is not a starting point for further negotiation. It is the finish line as it currently stands.
That said, the date is not completely fixed. It can move in either direction. If he picks up a disciplinary infraction between now and then, he can lose good time credits and push that date back. Serious violations can add significant time. On the other side, some facilities offer additional programming credits that can shave days off a release date, though that varies by system and is less common the closer an inmate gets to their out date.
The practical answer is this: if he has a posted release date, parole in the traditional sense is likely not part of his picture. A posted release date typically means he is serving a determinate sentence with good time built in, rather than an indeterminate sentence where a parole board decides when he goes home.
The single most important thing he can do between now and February 16 is nothing that gets him written up. Stay clean, stay out of other people's situations, and that date holds. Ten years is a long stretch. The last few months before a release date are not the time to take any unnecessary risks.