I  sent paper federal return in February and it still hasn't been processed by IRS most likely because of the COVID-19. I want to change the filing status on my return.  Can I amend my federal return now or should i first wait for original return to be processed by IRS so it doesn't cause more confusion for them? Currently I have a balance due and the interest will pile up. If i change my filing status I will be getting a refund instead. Thanks!