How do I file if my 1099-Rs are coded incorrectly?

I withdrew from my Roth IRA a few times in 2019. I have had the account over 5 years, I am in my 30s, and I only withdrew contributions, so these withdrawals are not taxable and there's no penalty. When making the distributions/withdrawals, I chose the wrong box on the form online for some of them (apparently) and now my financial institution refuses to issue corrected forms since it was my mistake and not theirs.

 

So my questions are:

1) Should these withdrawals be coded as J? If not, what code?

2) If they should be coded as J (one form from my financial institute is J, and one is T), do I:

          a) File the incorrect 1099-R, correct 1099-R, AND form 4852?

          b) File the one correct 1099-R (if J), and only use form 4852 to replace the incorrect 1099-R?

          c) File only form 4852, effectively combining both the incorrect and correct (if J) 1099-R into one?

3) If I do need to file form 4852, do I put the taxable amount for 2a as $0, or do I check the box for taxable amount not determined like my how original 1099-Rs were filled out?

 

Thank you! Happy to provide additional info if needed.