I am sharing you the plan you can followed for EAMCET preparation :-

1. Go through the government textbooks once and solve all the examples and exercise problems(if you know how to do a question clear and cut them just have a recap of how to do it in your mind instead of wasting a lot of time solving down, use that time on other concepts).
2. Have a plan on what to do on that particular day. If you are unable to follow it don't blame yourselves. Just try to pick yourselves up and cover the syllabus.
3. If you are confident that you completed whole syllabus then buy NCERT exemplar problems (arihant publications) , they are very effective in revision and they have some twisted type of questions which needs a look.
4. Luck factor also plays important role in scoring good marks, all the questions that you don't get answer for - answer all of them as a single option - a or b or c or d. This increases your chance of getting your answers correct.
5. Don't get tense - out of tense you will mark answers wrong even when you know right answer. Be confident while giving your exam.
6. If you are unable to cover whole syllabus, don't panic many of students can't cover whole syllabus. Just remember what you know previously about that uncovered topics.

Hope this helps.

All the best.