I think you mean recharacterize (treat the Roth as a Traditional IRA contribution as if the Roth contribution never happened), not convert - a Roth can never be converted to a Traditional IRA.
Yes you can have the Roth IRA trustee do that and move both the Roth contribution and any earnings attributed to that contribution to a Traditional IRA prior to the July 15 due date (or Oct 15 if you file a timely extension). The IRA trustee would issue a 2020 1099-R reporting the recharacterization next January.
It would be deductible if you otherwise qualify to deduct it.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
