am i ok with my study schedule or pick up some speed?

I would continue doing what you are doing and try to stay on your schedule. When april comes, see what you are weak at. That is an entire month, so you can do with it what you want. You can definitely pick up quant if you feel you need more review. In fact, I would definitely spend the last month strengthening all areas to make sure you know the areas you know perfectly and continue to improve on your weak areas.

Also, I think you are fine even though you didn't start with the OG12. In fact, i would never recommend that anyone starts with that book becuase it doesn't teach material necessarily. It is only a book of questions and answers, so why only do questions before you even know the topics. It's just a waste of the questions. When you are doing the questions, make sure you are learning the topics behind them.

Don't worry about spending time reviewing questions, b/c this is one of the best ways to learn! See why you got questions right and wrong, and learn from what you did right and wrong. Definitely spend time doing this, even if it seems like it takes you a long time. This is normal.

During your month of verbal, it might make sense to do a few practice math questions here and there just to make sure that you don't lose the feeling for them.