Hi Abuzar,
I’m glad you reached out, and I’m happy to help. So, your study plan is really solid, actually. You are FIRST learning the concepts and strategies related to GRE quant and verbal and SECOND practicing with a large number of realistic questions. That being said, if you find that despite following that method, your skills are not improving, then perhaps consider using additional prep materials. You may even consider using an online self-study course. If you decide to go that route, check out the reviews here on GRE Prep Club. Also, you may find it helpful to read this article about
how to score a 330+ on the GRE.
Feel free to reach out with further questions.