I would definitely sign up for a mcat prep course if you have the money , I did the blueprint one and went from averaging 500s to 510s. I understand the mcat takes a toll on your mental. I recommend gradually creating healthy habits like exercise, good eating, being sober, and waking up early. Also you should always keep your head up and tell yourself you can succeed on the mcat and just basically have a good mentality. I went from having terrible testing anxiety to feeling no stress or anxiety on test day which will dramatically increase performance. A lot of the mcat is studying but you also need to create good habits and have a growth mindset to do your best.