Should I go for research if I'm conceptually weak in some subjects and cannot do questions easily?

I gave viteee and got a 32k rank with which I might end up getting btech biotech (cat2/cat3)... but honestly I also like research but the questions of iat is on whole 'nother level. Like everytime I try to tackle the questions my brain goes numb.

I can still do bio, chem is somewhat alright but my biggest enemy right now is physics and maths. For context i never prepared for joint entrance exams and my concepts aren't so strong in either physics or maths. And I feel so shit scared as there's only 26 days left and i have been procrastinating ever since. I do think I'll probably move into vit and look for other career prospects. Of course iisers have much better alumni compared to a private institute. But idk. I'm suffering from decision paralysis. Because after some point I do want a job. IISERS provide placement opportunities at the start of fifth year but only for certain course and not many people sit for them. Plus you need a solid cgpa and good referrals ig. Because at the end of the day it's a research institute.. it is not a btech college where placements are the ultimate goal.

Should I go for research? I like life sciences as a subject but I don't know if I want to go down the bs ms route and then regret when my performance dips during college or i burn out half way through. Pls help.