the IRS is quite backlogged on processing tax returns. For the amendment, assume it'll take 9-12 months from the time you filed the amendment,
from the IRS website:
tatus of Processing Form 1040-X, Amended Individual Tax Return: As of July 23, 2022, we had 2 million unprocessed Forms 1040-X. We are processing these returns in the order received and are working hard to get through the inventory. The current timeframe can be more than 20 weeks instead of up to 16. Please don't file a second tax return or contact the IRS about the status of your amended return. Taxpayers should continue to check Where's My Amended Return? for the most up to date processing status available.