in that case, we can only manually adjust it to 10% when you want to switch it on after sunset.

If you've got an old android device you can dedicate to it, you can run an aftermarket app "AutomationManager" that can automatically adjust the brightness when it detects the bulb coming on between the times of day you select. Or you could set up a dedicated widget that will turn the bulb on and/or to the appropriate brightness depending on the time of day.

Thank you for sharing Aprilcoco.