What to do with GA state tax with unexpected short-term capital gain tax in 2021?

My husband and I both have W-2 jobs. In Nov.2021, we made a large amount of short-term capital gain with our stocks, so we probably own much more tax than the 2021 GA state tax withholding through W-2 jobs. What should we do with it? Is there a deadline to make up for what we own?