Still Taking Short Naps!

Over 7 months old and still taking 3, 30-ish minute naps😩 (with maybe a week or two recently where this started to lengthen, then went right back again). I’ve tried shortening the first wake window, lengthening all wake windows, etc. We have a solid nap and nighttime routine that has not changed (and he falls asleep independently), and he sleeps for a 10 hour stretch at night, wakes for a feed, then sleeps an additional 2 hours before waking up for the day.

Anyone else?! Anyone experience this? I have no idea what else I can do.