Advice needed...

I started my prep earlier this year with not a lot of hours per week due to school, work and internships. I took a diagnostic in April and got a 151. I've been prepping more this summer and took another diagnostic last week. Which only went up to a 152. My goal is 160-165 and I'm taking it in August. Basically, I have a month, I'm honestly losing hope if it is possible. I'm in between two choices, grind as much as I can before August, or take the September test instead. I'm hoping to have all my applications submitted by Thanksgiving.

If anyone is in the same boat or may have any advice, it'll be greatly appreciated.