No, it isn't If you can be consistent with your preparation and achieve your targets int the time that you set. Also, it is important to be clear with your basics and find a person or resource to refer to when you are in doubt. Great material is easily available. You can refer to the courses on this website and the textbooks that you already have. Apart from that, solve a lot of previous year papers. These will help you to know the pattern of the questions asked and you can proceed with your preparation accordingly.Above all, like I said- be consistent. Most of my friends couldn't get their desired scores in GATE due to a lack of regularity. If you can overcome that, I am sure you will achieve your desired score. All the best!

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