They will try to get him moved as soon as they have a bed and transfer route in place.

If Butner is his designation, then he will eventually get transferred. They are not going to give you (or him) any indication of when that will happen for obvious reasons. The transfer guards keep dates, times, and travel routes confidential. They are very efficient at what they do, just be patient... one day you'll get a call from Butner saying, "I'm here".

There are several reasons why this could happen, not all are bad reasons. They could be moved to a lower security level facility as their custody status could change as they get closer to the door. They could be moved to a jail near where they are going to appear in court. OR, they could be moved to a higher security level facility for infractions including fighting, contraband or separate issues. Ask your inmate why they moved him, he definitely

Transfers rarely happen by request, especially from someone on the outside. In federal, you have to serve 9 months in the current prison before they would even consider a transfer to another. They want a track record of excellent behavior and programming to get "stepped down" in custody levels which leads to work release.

The transfers are done in complete secrecy so you won't have a timetable. They'll usually say, "transferred in the next 30-60 days". There is a safety issue transporting inmates which is why the exact dates are never known to the public. In fact, the inmate doesn't know until 5:00am the morning they are being moved.

Moving an inmate within 2 months of their release is unusual. There might have been an incident that created the necessity to move the inmate. Or, it could be as simple as a stepping down process where they are moved preparing for reentry. Whatever the case, 2 months is short-time for sure!

The sheriff deputies from the county that issued the warrant will come to pick the inmate up. They do not and will not say when they are coming (for obvious reasons) and there is zero chance they will forget to pick him up.

They probably broke rules serious enough that required placing them in a facility where the security level is higher. 

It means that they are transferred to another facility of similar security level.

No one will entertain your request. They do not take suggestions from the outside, or from lawyers for a matter like this.