File a 2241 to challenge BOP to give FSA credit

I am in need of legal assistance to file a 2241 to challenge the Bureau of Prisons' decision on sentence computation. The purpose of the filing is to request a change in sentencing guidelines, and the level of urgency is within a month. Currently, I do not have legal representation or assistance, so I am actively looking for help. It would be of great value to have someone who is familiar with filing a 2241 to challenge the calculation of good conduct time credits as well as general knowledge of legal proceedings in order to provide the best outcome.