First (and last) time ACT prep

I’m taking the October 28th ACT in the hopes of getting 33+ for scholarship purposes at my state uni. They consider 31 ACT equivalent to ~1380 new SAT, and I have a 1450 new SAT and 1980 old SAT. But a higher test score would be better, I think. What prep do you suggest for the next 8 weeks? I can’t afford much (maybe $30) and have about 4 hours per week to study (I know, it’s not a lot of time). No special accommodations, and I should be pretty strong in math (but not perfect).

BTW, I am a junior, but if I get the competitive full ride, or at least full tuition + fees + books, at my university, I’m graduating in June. I’m not retaking the SAT because I doubt I will significantly improve the score, and the uni prefers the ACT anyway.

Bump