Retirement tax questions

Thanks for the super fast reply.  

I wasn't given a choice to decline the tax w/h.  Since I don't have the 1099-R, I should create a substitute 1099-R to indicate withholding and use the code JP 2021?  I don't get why I'll have to do this on 2021 Turbotax as well (and not just 2020).

I really appreciate the help!