Get your taxes done using TurboTax

Hey Dave,

Thanks to Turbotax and this thread's help, I filed married filing jointly last year (2020 tax year), treating my nonresident wife as resident. I was hoping if you could help me with our current situation - 

This year, my wife has become a resident alien as she has been in the US for the entire year on the H-4 spouse visa. But next year, she will again become a nonresident as she will transition to F-1 student visa. I will continue to remain a US resident alien for tax purposes though. So once again, we are looking to avail the choice of treating my nonresident spouse as resident, starting next year.

So there are three questions in all -
1.  Does one have to send a letter to IRS every year, clarifying that they are making this resident treatment choice, or is it needed just for the first year?
2. Specifically in my case, will our choice of treating nonresident spouse as resident be automatically suspended (or even ended?) for 2021 tax year, if I simply file my taxes online through Turbotax (MFJ) without writing any letter to IRS?
3. Will we have to again write a letter to IRS next year, explaining the situation? If yes, will we have to ask them to resume the choice (if it is suspended) or just mention that we are availing this choice (like we wrote to IRS last year)?

Thank you very much for all your support.