GATE is in two days. I would advise you to take enough rest and keep the mind healthy. If you are worried about forgetting stuffs -- nothing to worry; hardly any question in GATE will require that. While writing GATE never gets tensed. I'm not wishing anyone to get "easy" questions because that does not mean a good rank for you. The only thing you should worry is to
- Do NOT make careless mistakes - you can see the difference "NOT" makes here :)
- Read every question with same enthusiasm -- even if some are really tough keep your cool thinking that most others are going to find them even tougher
- Do not count marks; doing it after exam will give you some additional marks
- Do not try to do minimum 'X' questions -- if the exam is tough those who do not attempt tough questions end up getting better ranks; so attempt each question as per merit
- Some questions might be lengthy but solution might be simple. Reading with full concentration might help you in decoding them. But if it is not possible; never waste too much time
- Never try to pattern match the questions with those you have done in mock tests because most times there will be some change. So, read every word carefully; see all given options even if you are sure of the first one
- For the 3 hours keep your dreams and tensions aside. Just take one question at a time and do. If you do not make any mistakes you surely won't have any regrets in the end.
All the best :)