Starting from scratch

I previously made a about maybe studying during Spring semester but that didn't happen lol (I can't link it because I guess I don't have enough posts). So I'm officially on summer break, and will not be taking summer classes, so I am mostly free to study for the GMAT until August so I'd like to take it maybe late July/very early August?

Some background: I'm 19, in Fall I'll start my senior year of undergrad going for a BS in Accounting. I don't want to do an MBA but rather an MS or MAcc (depends on where I go) in accounting and then eventually sit fro the CPA exam. I'm from FL and I really enjoy our in state tuition rates so I'm like 100% not interested in anything private or out of state, I'm just looking at our state schools, so I don't need a 700+ score but I'm thinking in the 600-700 range would be awesome for financial aid applications if I go to the smaller schools, or getting in if I go to the big state schools.

I have the OG 2017 but that's the only thing I've purchased, and my parents aren't thrilled with the idea of buying a ton of different books and subscriptions for the GMAT, so I'd like to stick with that and maybe like some free resources. I finally took the diagnostic test in the OG and was below average in problem solving and data sufficiency, average in reading comprehension and sentence correction, and above average in critical reasoning (their rankings are below, average, above, and excellent, it doesn't give you a score but I know it'd be bad. This is basically what I suspected, as every time I opened either this book or the free software, the math part scared me off right away from even taking a diagnostic. I am a little disappointed in the verbal part though, as I remember a couple of years ago for my ACTs & SATs my reading scores were usually a bit higher than everything else (I think for the ACT it was like a 34?) So I had higher expectations for reading comprehension.

So today I went through every question I missed, the math ones were genuine guesses where I did not know the answers, the reading comprehension and sentence correction ones contained a lot of dumb mistakes where I just didn't read it closely enough, and critical reasoning had a few genuine guesses as well. So I guess I should really hone in on math the most, but what do you think is a good split between quant and verbal?

My schedule for summer is not 100% free either, as I have a surgery scheduled for tomorrow, and then basically as soon as I recover my family is going on a trip overseas until early June, so I probably will not be studying during that time. After that I will probably try to do about 4 hours per weekday if I can, as the classes I have coming up in fall have some pretty depressing fail/drop rates so I would like to spend the second half of my day studying for those as well.

So basically:
- what are some good free resources
- what do you think would be a good split between quant and verbal, since obviously I need to work on my math skills
- what do you think would be an appropriate amount of time to spend studying per day since I'll have ~ 2 months or so to really have this be my main focus (I am open to retaking it during the school year but I definitely won't be dedicating a ton of time to the GMAT in fall when one of my classes in my major has like a 75% drop/fail rate)

Thanks so much in advance!

* I would just like to say I know on the other thread someone told me not to do the diagnostic in the OG but to do the MBA provided one, I honestly couldn't make myself do it. Like I started it and the math looked so foreign to me like I haven't talked about cones inside of hemispheres and all since early high school so I've completely forgotten all of that stuff. I think I'd be open to taking one once I reviewed math, as I feel okay (not great but okay) about verbal stuff.