You don't need the actual 1099NEC to file. Did you include the income on your Schedule C? If not you need to amend to add it.
You should not amend until the first return has fully processed and you get the first refund or your tax due payment has cleared.
How to Amend this year
https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/amend-federal-tax-return-curr...
