Reasonably priced Part D Plans for prescriptions? 300% increase for current plan starting January 2023. (300% NOT a typo!)

I have Plan D coverage through Elixir (changed its name from Envision about 2 years ago.) They sent out a notice a couple of weeks ago increasing their rates for 2023 by 300%: going from approximately $20 a month to about $60. This is a plan called "Elixir RX Plus." I have a fair number of almost daily prescriptions (5) one of which I've never bought the generic for. A couple of years ago the Insurance Commissioner of my state only allowed them something like a 1 cent increase, but then last year they got away with going from $14 to $20 a month and nothing was done by the Insurance Commissioner to scale this back. I have no idea if state government will allow Elixir to get away with this 300% increase. Further bad news: according to the latest AARP newspaper (Oct. 2022) this year there are "fewer than ever" Plan Ds available. If you're lucky enough NOT to have to take a lot of prescription medications then your plan probably isn't worth looking into for me. The prescriptions I take (with the exception of one) + the non-generic are not all that expensive -- not sure why -- but of course this could change.

Thanks.