Answering my own question here....after calling Turbotax customer service & talking to 2 representatives that had no idea what to do and another turbotax rep that just hung up on me once I explained the issue (that's horrible customer service Turbotax!), I finally found this while searching on the internet....supposedly a fix is coming:
https://ttlc.intuit.com/community/tax-topics/help/utah-my529-why-can-t-i-enter-my-2020-contribution-...
