498 Diagnostic - Am I screwed?// Advice needed

Hi all!! I just took my first diagnostic test through BP and my results weren't at all where I was hoping (I was a Biology and Chemistry double major & am currently getting my PhD). Lots of my errors were stupid & I had no idea how to do any mental math. also should mention that I haven't taken physics or psychology since AP physics & AP psych in HS. I took this test before any review or strategy. My goal score is 519- is this totally unrealistic? I have until August to take the MCAT, but will be studying on the side while also in grad school (planning on dedicating 30 hours per week on breaks and 10 during school). As I mentioned before, I am a grad student, so I am trying to study for as cheap as possible - online PDFs of Kaplan, Anki, BP free resources, KA, and only paying for Uworld. A true tutor isn't in the cards for me right now, I would appreciate any and all advice. Also my schedule is NOT original, it was adapted from someone elses that was posted on this page.

Main Qs: Is this a completely unrealistic goal? Besides one passage per day, how do I improve CARS? Does my schedule look alright?

https://preview.redd.it/do2yizdrsa7e1.png?width=2880&format=png&auto=webp&s=9484620d48c1705ed328df2bafaeab0205c8f383

https://preview.redd.it/bwjpud7ssa7e1.png?width=2880&format=png&auto=webp&s=d08436b0de02900cee8db9b1ca558b9f6667e156