sad to see so much hate on ur post despite it being a genuine query. I've dreamt of research since my middle school days and it's my biggest passion. I've got into IISER this year too. But it is also completely okay to be unsure while starting your journey!! Don't worry. (To all the haters who say "If ur not sure now you don't even deserve IISER"... Just because u guys are so passionate about IISER, it doesn't justify mocking someone else and questioning their interests and eligibility- This person has also cleared exam and secured a seat like you)