jee student interested in ipmat

Hi! im in 11th rn. did my 10th in igcse but came back to cbse and started my jee prep a few months ago because i was clueless of what to do. im really interested in ipmat bcoz somewhere deep down ik i wont be able to get the best of colleges through jee and im not really passionate abt engineering bcoz its a rat race. so wanna give ipmat a shot but obv cant leave jee or take a drop year. how do i start ? when do i start? where do i start? any courses that youd recommend? which iim do i aim for? i also dropped out of economics in 10th so will it effect me in any way ? and most importantly is it worth it ?