Is it worth trying to correct the small scratches left from the last correction?
Probably not, at least not until spring, in my opinion.
If it is, how, and using what products? I do have a 5.5" DA polisher, and 10" Orbital polisher that I use to apply polish once a month.
N/A. But I must say, polishing every month seems like a lot. Is it a garage queen? Or a daily driver?
If it is not worth it, then what do I use to either continue maintaining or mask the small scratches?
What do you have as your protection layer? HGG is a perfect maintenance step every 4-6 washes or so, especially if maintaining PS. Simple to apply and adds incredible shine. BG has some fillers, but it doesn't last long (week or 2 at most).