Great question, I know that a few teachers offer “off-peak” lesson prices to try and draw more of there students to come earlier in the day. Aiming to draw as many students away from the “peak time” hours is really valuable as it means that those slots are only being booked up by individuals who really can’t come another time.
I would recommend going through all your students and seeing if any would be tempted to move to a day time, during one of their days off etc.