I've asked for extra sessions so often that by now it's just the standard that I ask for one (or a phone call, since I currently live in a different city) every Wednesday... when I don't, my T will comment on it after a few weeks. I'm not always on the edge of something really bad, sometimes I just need some support like you. My T has so far never give a negative response and encourages me to reach out when needed.

If you feel like it'd be nice to meet earlier than usual, I'd just try to ask.