Increasing SAT score by 300-360 points-NO IDEA HOW TO PREP?

Test Preparation
1

So, for the recent October test I got a 2040-
RC: 720
Math:660
Writing: 660

I had absolutely 0 prep- I watched a bit of khan academy the night before, and took 3 sections of practice that morning.
I’m retaking it on Dec 5, and I think I have a shot at around 2300. I ordered score report, so hopefully I can see what I did wrong :confused:

But anyway, what’s the best way to prep? And how do I find time during weekdays to study for this? Like should I spend 1-2 hrs a day, I have no idea how this works.

Thanks!