helo aniket, if you want to prepare for gate in just 2 months than you need to be very focused. you have to do lot of hardwork and a lot of practice. just focus on all the important topics and revise them. go for the online test series. 

https://www.quora.com/What-are-some-tips-to-prepare-for-the-GATE

thanks

If you devote your maximum time in your preparation and if your concepts are clear and strong then 2 months are enough to clear Gate exam. Apart from this, you can follow below given preparation tips as well -

Divide the Topics broadly into Strong, Weak and to be read properly.

Next schedule your preparation such that you revise the easy ones along with the tough ones and the “never read before” ones. This will ensure you have a clear view of what is to be studied and how you are going to do it.

While many advise to check the weightage and study accordingly, it is really not the correct way to go.

Check the weightage by all means and understand the important topics but don’t neglect to study.

Make Short Notes while you study as this is will be helpful during revision.

Write down Formulae that you find difficult to remember so that they are handy for revision.

Keep the solved problems separately indexed so that you can refresh and revise later when required.

Analyse your preparation at every step.

You can also prefer below given article for the Preparation.

https://engineering.careers360.com/articles/how-prepare-for-gate-in-2-months

Good Luck!