I need help on completing my state tax return. I have already filed the federal return to report a gain on the sale of a house, which I was able to fully exclude.

The 2020 federal return was filed on paper.  When I use Turbo Tax to complete a state return to report this gain from a house sale, it reverts back to last year's income/tax information, which doesn't apply this year. Last year I used Turbo Tax for both state and federal. This year I only need help with the state return and the info is totally different than last year's. How can I complete a state return from scratch using Turbo Tax?