Jee Mains In 1 year Guide

I completely wasted my 11th Class, I'm a not so good student in studies but like studying chemistry, Its the only subiect which Im good at (studied boards level chemistry as of now) I wanted to do my best in JEE mains. My target is ICT Mumbai college. I've decided to slowly build studying habits this year. Pls tell me what to do to achieve good in JEE mains, Here's some pointers: 1.I can't take long or so many lectures. It's out of my capabilities I've tried multiple times and failed utterly. I want Something with short duration for single lecture as well as overall course. 2. I love practicing problems and learning from question solving more than from lectures (that's how I did my chemistry). 3. I want my syllabus to be completed by july (for mains only). I never aspired about IITs just want my dream college and study without pressure with open mindedness. Also I like reading books. My syllabus stats and how i would like to complete my syllabus are above. I'm not able to study more than 6 hrs a day. And my annual exams are from 1st week of feb so l"ll need to give time on them too.