I’m in the same boat. I’ve been referred to a new psychiatrist (old one left), but it’s taking a while to get connected, what with COVID-19 and health care cuts. I stopped letting my GP modify my meds because it was obvious he doesn’t have the experience to make changes based on a complex neurological situation. I concentrate far better than I did pre-meds, but that old fogginess is creeping back.
Maybe see if your doc can convince your insurance to compromise: get generic lisdexamphetamine in return for adding a non-stimulant like Guanfacine. Or maybe start the years-long process of moving to Canada…which would still be faster than waiting for decent healthcare in the US.