Retirement tax questions

I think I understood everything. 

 

I will ask my brokerage if they can do a reverse roll over from my IRA to a 401K of my pre-tax $$ and then attempt a Roth conversion of my post-tax $$s. Although I am not clear how I can sort between pre and post tax $s in my IRA since I invested both. 

 

Either way, I think I am screwed for the 2021 tax year since I had a substantial balance in my IRA as of Dec 31 2021 and pro rata comes to bite me. But if I can do the above, I can still hopefully clear up my basis going forward. 

 

Serves me right for not doing proper due diligence before getting into backdoor conversions!