Retirement tax questions

@fanfare 

I figured out my mistakes on my form. I am able to amend my tax return and I see correct form 8606 now. 

I made this mistake in 2021 and 2022 tax returns. I will amend and file both of then. 

I used turbotax premium desktop version. Can I efile 2021 amended return ? I think not. I have to paperfile. 

How about filing 2022 tax return? 

One more question :

For amended return,  should I send just three documents: form 1040X, form 1040 and form 8606 for myself & spouse. 

Except form 8606, nothing has changed on tax return. 

Thanks!