• Revise all important topics first
• Make notes in the form of key points and formulas
• the paper level will be easier than jee main, so dont worry much
• Solve all last year question papers
• Refer Ncert books and have good grasp on concepts

Remember once concepts of a particular topic are clear than whatever book you refer doesnt hold much importance. Always practice questions from variety of books. Yes marvel is a good book.

Scoring good marks in your exam depends on your concept clarity. If you have strong base then you can easily score good marks. Make sure you have completed your text book first.

After, completing your text book you can recommended any book accordig to your choice.

As per new changes class 12th holds more weighatge. So, you should prepare accordingly. There is no negative marking.

You should practice a lot as difficulty level of MHTCET is raised to JEE Main level. Solve complete mock test series to analyze your preparation level at regular interval of time.

All the best for your preparation!!