Leave your existing insurance and meds and pharmacy relationship as a going concern, don't mess with it.
There is another way to get sufficient meds to augment or supplement your existing situation.
Depending on your meds, Costco Pharmacy sells them at a low price, and Costco also accepts GoodRx to lower the cost further.
A 90 day from your regular pharmacy, a 90 day from Costco, BOOM! You've got a 6 month supply.
I just asked my Doc for a duplicate script for me to carry into Costco and just paid cash for the meds.
Simple and easy peace of mind.