Hi,

There is no limit to preparation time period to score good marks in GATE exam.

It all depends on a candidates detemination, motivation and the zeal to clear the exam.

I would suggest you some tips to help you study better

Based on your GATE subject first download the syllabus

Go through the Syllabus

Prepare a detailed list of weightage for each topic

Prepare a proper learning and revision schedule

Solve related problems

Try solving PYQs and mock test papers.

If you are targetting GATE 2022 please prepare a 3 month schedule. If not you may start with small portions daily and save the last 3 months for revisions and tests.

Also go through the following strategy for GATE preparations

https://engineering.careers360.com/articles/how-to-prepare-for-gate

https://engineering.careers360.com/articles/top-10-tips-crack-gate

All the best