Dealing with Medication Management

Hey Y'all!

I'm a 27-year-old caregiver for my grandfather with VD, while also working full-time. He is probably mid-stage by now. Medication management has been difficult to deal with, to say the least. He is very resistant to change and likes to feel in control of things. He's been this way all his life. He's been an authoritarian patriarch over our family and even with his deteriorating state, my family tends to still treat him like they have to walk on eggshells around him. I myself still have to fight that tendency, even though I tend to challenge it more often for his wellbeing and the wellbeing of my grandmother (his DW who has cancer).

They have, for years, had their medication right on the dining table. My grandmother and I share the responsibilities of administering his meds since HHAs/PCAs cannot administer legally in our state (NY). I normally administer using the cap of the bottle, so he doesn't have access to the rest of the pills, but my grandmother will sometimes hand him the bottle and watch him. The issue is that she is older, forgetful in her own right, and in some denial about his cognitive state (In my opinion at least). This has resulted him in taking a doble dose of medication. Since he is on a pretty powerful vasoconstrictive medication and is fragile in his health, I had to force him to spit it out.

I'm thinking of different ways to remedy this, but the solutions I see available aren't cutting it. I'm looking for a solution that still give my grandfather a sense of independence (however, so slight) and is easy for my grandmother to adjust to while I'm at work. I've asked his pharmacy to create blister packs, but they have neglected to include all his meds, they don't include the daily vitamins he takes, and my grandmother isn't keen on learning a new routine with his medications. I've considered the weekly pill organizers, but the other doses are easy to get into. The automatic or locked pill containers may seem too strange for my grandparents to get on board with. I'm trying to balance between my grandfather's safety and his outbursts/inability to reason. Any suggestions on products, routines, or tricks would be useful.

Thanks!