how can i prepare for Eamcet i have only 3months left . I'm confused. on which i should more importance, IPE or Eamcet give me tips to prepare and to get more than 80+ marks

First make a proper and programmatic study schedule which you'll follow throughout your preparation. Go through the entire syllabus then. Then complete your IPE syllabus as the syllabus for Eamcet is also same. So when you are preparing for IPE, simultaneously you are also preparing for EAMCET. Instead of choosing a random topic from the syllabus, you must break your preparation into sections. Sub-topics from each section should be selected and then strategy on clearing concepts must be made. Make your own short notes if possible. These will help you in revision. Never leave any concepts doubtful or unsolved.
Once done with the syllabus and concept clarification, you should move towards solving previous years papers. Give mock tests as much as possible. Time management is one more important thing you should look upon. Remember that practise will increase your efficiency.
NCERTs and IPE Text Books Of Class 11 and 12 are best for basic preparation and concept clarification. Don't need to go for high standard books. After gaining grip from Text Books, you can move on to some reference books for self practice like Deepthi Publications for Mathematics, OP Tandon for Chemistry, HC Verma for Physics. Along with this solve EAMCET 25 Years Chapterwise solutions and mock tests.