If I were you I’d have a different and reduced basal rate for work days. Try and pin point a pattern in your lows and focus on reducing around those times. Ideally you should do some basal testing, but I’m sure you already know that!
I have been running low across the board recently and started a temporary basal rate running 20% less.
I did that for a week, and just yesterday I decided to reduce my basal to what the TBR was running at and I’m getting the desired results.
Good luck, it is a pain getting the basal right, I hate basal testing but luckily I haven’t needed to do it this time, so fat anyway!