CBSE 12th

do you like bio .
if you find it interesting you must go for mbbs . there is shortage of qualified doctors in our country . studying mbbs and further ms requires lot of dedication.i suggest you to go for mbbs via cracking mppmt or other entrance to get best college

B.Sc. in agriculture will be a good course for you.

Yes, you are eligible to apply for the same.

Go for B.Sc. in botany or agriculture.

You can go for B.Tech, B.Sc. or law courses.

if dropping then repeat 12th else join good universities

The amount of time you need to give to your boards study depends upon your caliber. If you are a bright student, 2-3 hours for 12th and 6-5 hours of jee mains study would suffice. Do not study for more than 7-8 hours a day. Rest properly and take a 15 min break after every 2-3 hours of study. Now, this is possible on holidays. On school days, utilize the time in your school for the boards study like in free periods.
If you are a weak student, give 50-50 distribution to both.
Watch a movie once a week, do not cut yourself off from entertainment. Both study and entertainment is important for a healthy mind.

You need not to drop. If you have got 55% in class 12th from any stream then you can join for psychology.