Good for you!
We have green tomatoes. Ah, well, there’s still some time left.
When you are expecting frost, there are three choices: fried green tomatoes(not my first choice).
Cut off the branches, clear all the bottom leaves and stick them in a pot of dirt to bring indoors and continue to ripen on the vine( some will even root and grow some more).
Pick the green tomatoes and wash them drain and dry. Wrap in newspaper or paper towels and let them ripen.
You probably know all this already, but someone else may not, hence I take the opportunity to mention it again.