Question about maypop berries and frost

I planted my first maypop in the spring and it fruited a couple of months ago. There's five berries on the vine presently- no wrinkles or dents yet, not much yellowing to them either. We've got some colder weather coming up (frosts and below-freezing temps) and I am wondering whether these fruit can be picked to finish ripening inside; or what else I should do. Thanks!

This might be your best year. Getting them to ripen on the vine has been a no go for me.