How to fix Lenovo L22e displays connected to an M1 Mac Mini when they sleep and do not wake?

M1 Mac mini (M1, 2020), with 2 Lenovo L22e-20 monitors. I left the Mac unattended for 10 minutes, when I came back, 1 monitor is still on but the other has gone to sleep. The one that stays on is connected via Thunderbolt, the one that goes to sleep is connected via HDMI. I can't wake the HDMI monitor up by turning the monitor off and on. The only solution that has ever worked is rebooting the Mac. If I check Energy Saver preferences, turn display off is set to 1 hour. How can I fix this issue?