$10200 UCE - Amend now or wait for additional credits

I filed my 2020 return with unemployment prior to the American Rescue Plan and will qualify for an additional tax credit not previously reported on their initial return (Retirement Savings Contributions Credit) because of my lower AGI.

I know I'll have to amend to get the credit not originally reported. But is it wise to patiently wait for the IRS to automatically correct the $10,200 unemployment first and let the client get a partial additional refund and THEN later amend? Or amend right away, claiming both the UCE and the new credit on the amendment?

I'm just worried that if I do the latter, it will create some kind of confusion with the IRS and delay things even further.