Most pharmacies will prepare his meds in day-packs, some times more than one, that he takes at the A.M./P.M. etc.
There is a fee for this, but they are setup for it and it should be manageable.
That means he only has to deal with 1 or 2 events daily instead of opening many vials and taking out one pill and putting it into a pill holder that he will take.
As it is the reminder now tells him to go to his meds and assemble his daily regimen of morning pills - this is time consuming. With aggregated pills it is easier.
here is one, there are many https://www.pillpack.com/
Still not fool proof, he must be well watched.
There are some pill mangers that will phone you of he misses his pills?
