In my opinion, squat frequency is the way to go for developing a solid squat (both mechanics wise and strength). Simply-- the more you squat, the more your legs will grow.
I agree with what the above posteres are saying but I also think you can really do whatever the hell you want. You could do Smolov (an intense Russian squat program) today and it wouldn't mattter at all. If you wanted to squat 7 days a week, it still wouldn't matter. It all revolves around how much time and effort you want to pour into your training, in this case, sepcifically the squat.
If you wanted to round out your training, really just follow a simple strength program. The beat to death programs that would serve anyone well:
-Westside for Skinny Bastards
-Insert another one that is popular, but works.
As far as other advice... Frequency is key. 3 x per week in my opinion if you want to get good. The squat is actually a hard lift to master for most people. So don't worry about how much you are pushing, rather dial in your technique and push "heavy" weights that you can control and grow with. As you mature in your training really push the barriers then. For now, you could probably add weight just by fixing shit. Go on YouTube and watch good squatters squat. I would check out the channels "Squat Rx" and "Johnny Candito" for some really solid advice on the squat. Best of luck.