Still struggling.

[KevinM1]

The doubt has returned. I can't shake it. My mom STILL hasn't scheduled my next appointment and I am unable to. I need to get stronger anti-depressants to help me definitely.

The God Delusion is a great read, but I am terrible at focussing on anything. I'll read it, and then have to re-read it over and over again just to remember it. I always get sidetracked and my mom is probably gonna start trying to de-convert me or something of that nature. I have become more skeptical, and whoever that was that recommended the "Demon Haunted World" book, I plan on picking it up.

If she starts witholding your meds as a ploy to make you malleable again, then you should have a talk with your school nurse. No need to mention your atheism to her, nor why your mother may do that - if an adult denies a minor under her custody any form of professionally recommended health care, this is on its face an abuse.

This.  Your mom has no right to withhold medical treatment for you.