Few suggestions

• The primary important thing to any exam aspirant is to have patience, patience to read and understand. Many students just read to finish, without understanding the meaning completely. For example, if you read a sentence then first understand the meaning of each word and then understand the sentence as a whole. DO NOT SKIP the words and DO NOT IGNORE any complicated words. Take the help of a good dictionary (Oxford, Websters etc.). Do not worry if you are taking much time to do it. It always matters how better you understand not how much syllabus you complete.
• When you start reading, start asking questions yourself. The most important questions would be why this happens and how this happens? Also what does ____ mean? After asking such questions yourself, try to find the answers for all of them. You believe me or not, this sense of curiosity will help you a lot in answering many questions in exams.
• Do not always fall behind the syllabus prescribed for CSIR or DBT or GATE exams, I would say never fall behind the syllabus. Just start reading what you like to read, what your mind can take better. Start asking questions in the same topic and get on. Slowly you will gain interest in other topics as well. This really works, just try once.
• Always refer standard references (most of the foreign author books). But few Indian author books have very good collection of knowledge (eg. Biotechnology by BD Singh), but you will find lots of spelling mistakes. You should be careful under such circumstances.
• Usually, the M.Sc/ M.Tech syllabus what we study covers most of the syllabus of CSIR/DBT/ICMR/IISc/TIFR-NCBS ("Life science exams")