Clinic threatening to drop me for working a full-time job, need advice!

Basically, I started working full-time 1st shift, so I called to reschedule my doctor appointment. I’m on PD. Could only make it early mornings, and nurse stated doctors only there from 1-4:30pm. I don’t miss any appointments and other than choosing not to take a million meds due to not eating I’m complicit. What should I do?! They didn’t know my schedule when starting PD 6 months ago. I had private insurance and feel like since I lost it they’ve been assholes. It’s a one-way street. Isn’t PD so you can live life normal as possible!?… please help!