I managed to get a voluntary remand from federal district court as a pro se (without an attorney) plaintiff. I'm beyond pleased with myself

But, as soon as I heard from the attorney for SSA that they were going to motion for voluntary remand, my thoughts went straight to needing to find an attorney to represent me for a remand hearing. I contacted the one law firm I spoke with when trying to get an attorney to take my case to federal district court that treated me with respect - I reached out to over twenty, and this one was the only one that had back and forth with me over the details of my case and gave a reasonable explanation for not taking my case at that time (not knowing for certain what was in the administrative record, if there was evidence to back my arguments). The ALJ's decision from before read like he was an attorney for SSA giving closing arguments, not an impartial judge. Lots of taking my words and the facts and interpreting them in the worst way possible. I can easily see this guy deciding that, should I represent myself at the hearing and do a good job, my defending myself is proof I can work. There's also a big difference between having to think on the spot during a hearing and having time to research and write your argument... I'm really glad this law firm agreed to take my case.
However, paperwork for them to represent me can't be filed until we know I'm back in the SSDI systems. We're waiting for SSA to send me mail directly for them to submit the paperwork.
For anyone who received a remand from court, do you know how long it was before you heard directly from SSA? I was thinking I'd get mail from them explaining next steps once the court case was officially closed, but it's been a few weeks with no word. I want to make sure the legal people have plenty of time to correct mistakes my last attorney's firm made and get my doctor's response to the previous ALJ denial (and footage from the Cooperative Disability Investigations Unit that was misinterpreted). Yeah, they can request extra time when it's at the hearing office if it's needed to develop the record, but I would like to get through the hearing and to an approval as quickly as possible... It'd help with an appeal to my ERISA disability insurer, having received SSDI with its more stringent requirements to qualify.
(Next time I hear from that law firm, I'll ask them if I should just call the local SSA office to ask if my case is back with them/if they'd accept paperwork confirming a new attorney yet. It's just weird to me that they send out stuff like "Acknowledgment of a Request for Hearing" but not something once they voluntarily remand a case from court...)