[Objective]

What they claim you allegedly did?

Get a cheap accountant that can do your bills, get your lawyer to go over them and bring you up to date. If shit is fucked financially when you get out you can hold some people accountable to get back some of your losses or do damage control, and probably help you with pausing some payments to get back on track... If you can afford the lawyer and years it takes to get that back tho depending on how long you're in for. In general you should be fine with this tho.

You might get access to internet while inside so you can do this shit yourself. Hear with the correctional service if you got any questions and what you should do/prepare for.

Edit: There are also accountant software where you can log in through a browser. Should help you with keeping it clean, paid and easy to see how things are going even with limited time.