Answer first
The biggest factor you control is consistency. Tie Folli-Fix X10 to a fixed daily cue, such as after your evening shower, keep the bottle where you will see it, set a phone reminder, and tick a simple calendar. Missing a day occasionally is fine; don't double up.
Cue and place
Same time, same place, every day.
Track it
A calendar tick or habit app makes gaps visible.
Questions
What if I travel?
Pack it and set a reminder at local time.
I forgot for a week. Now what?
Restart at the normal amount.