Is it over for me ?

Listen guys... I'm in +1 rn. I studied in cbse board till 10th (436). Then umm I was kinda forced to move to state board by my parents. And I hate it there but that's not the issue. I wanted to go to bits.. But I till now has just completed first 3 lesson of physics , maths and physical chemistry. Like i feel like the chances of me getting in is soo less cuz there are a lot of people who has been preparing for this from the start of 11th... Like I just dk what to do now... Just feeling irritated that im not able to do what I wanted to do. It would mean a lot if u guys could suggest me anything or smthng like that... Ididn't want to brag my board mark just wanted to uk let u guys know that I was once capable of takin 80% but now I'm just a cheap mid state board guy.