They may accept your appointment, but they are not likely to issue another visa.

You do not need a renewal. Rather, you need removal of condition. Form I-751. File it on time.

Yes, he can withdraw the affidavit of support. And if you do not have an adequate affidavit of support, you cannot be given the immigrant visa.

No. You cannot adjust status without sufficient income for the affidavit of support. Perhaps your spouse should find employment and increase her...

There may be a travel ban from India, but they could spend quarantine in Mexico and then enter the U.S.

There is no way to avoid the numerical limit if you are not exempt from the numerical limit.

If your husband is not an F1, you cannot come to the U.S. as an F2.

I don't know why USCIS would deny your i-130. Not because of taxes, they will not. If they do deny it, see your lawyer to discuss whether to...

Check with your physician. If it is medically not appropriate, then they should not give it to you.

She could try to file an SB1 visa application as a returning resident. Or else, you can start from scratch.