I recently discovered green caterpillars gnawing holes - and whole leaves - in my mint plants. I've never had this before, but keep picking off the caterpillars as they get big enough to see. Grrrrrrrr!

I would put it back outside. There are already signs that it lacks light. (Those young shoots elongating and curving upwards.) You could give it a chicken wire hat for large predators and keep an eagle eye out for smaller ones.

Actually, where I had it outside doesn't get much light due to a neighbors tree, inside is a sunny window for 12 hrs of the day and the plant is growing much better. So, I thought it would be win/win. I just need to figure out what bugs came inside along with it.