How difficult would it be to clear both mains and advanced ✌️😅

I've cleared my 12th boards with horrible scores and took a year gap (in 2025) and this year I've applied for only 2 colleges I got selected for both but my first pref wala college is way too expensive (asked to pay for the first year fees (194000) with admission which I can't afford i thought my education loan would cover but i guess not so I'm taking another gap (my teenage would be over by this year gap) to prepare for jee and I've also made my decision to redo my 12th from open boards w pcm subjects I've got 8 months to prepare for both of them I know it can't be that difficult and my love for competitive exams and the thrills gonna skyrocket 👅