ITR2 and losses carry forward.

Dear Sir/Madam,

This year (FY 19-20) I will have to file ITR2 (assuming process remains same for AY 20-21) as I have capital gain transactions. There are losses, so same will have to be carried forward. Next year I won’t be doing any capital gain transactions. So because there is loss from previous year, is it necessary to again file FY 20-21 using ITR2 only, to show carried forward losses compulsorily?

Can I switch to ITR1 next year (FY 20-21)  (if there are no capital gain transactions) and then again ITR2 next to next year (FY 21-22) and still continue to carry forward original loss from FY19-20.

Thanks