Go to amazon, search for Mingdak timer. Cheap stuff, it allows me to set my Nicrew light like this. 1st hour it steps up to 25%, then it steps up to 45% for next 3hrs, then up to 85% for 4hrs, the down to 40% for 3hrs, final 1hr at 25% again, then off. Ramp time at each event is about 6 minutes.
Flaws. Ramp at 1st and last of time is little jumpy, you can see slight intensity jumps from 0>5>10>20>25 and back down. Other flaw is there is no battery backup for clock setting so if power goes out clock resets to midnight. It remembers your steps/sequence in non-volatile memory but clock time it doesn’t. Takes about 8sec go reset clock time and it will resume normal operation at next event once clock is reset.
Not perfect but what do you expect for $13. It just inserts in between power supply and light on my and your type of cheap lights.
If you want to combine it with reg dig timer that does have battery backup for time I can tell you how to create a fool proof system that corrects itself after power outages. So $13+$7 will get you a nice system.