"Can I file now without the 8915-F form, then amend my tax return after the form becomes available?"
I don't recommend that. You will have to wait until they fully process your return before you can file an amendment. Last year it took the IRS over 6 months to do that. In the meantime, you could owe penalties on any tax owed. (Not professional advice, just my personal experience from tax year 2020.)
