Autistic person jumping in - we too may have issues remembering to do beneficial things like take meds, eat and drink, and even use the bathroom (thankfully usually the body gives a stern reminder before it's too late with that one lol).
Routine is important to many autistics, but personally to me, it isn't really time dependant, so I have the same breakfast every day but it might not be at the same time every day (don't sleep well, sleep patter varies widely), so taking pills at the same time each day is asking me to use a system I don't usually (go by body signals as best I can tell and order of actions, not by time). I hope that makes some sort of sense?