I need some advice on what I should do.

Hello my fellow JEE Aspirants, I know that I am in 10th (giving boards right now), and my goal was to just do btech and get a bank PO job. Somehow, after my uncles motivated me I thought about it... I like tech systems. I am a guy which likes dense amounts of information to consume on a daily basis. I like building stuff, to code & to learn. I was also developing a game but most of the developers are busy, one of them has life issues, its sad but to the main point: I was thinking; Yaar, 11th me meh apna game development karuga aur syllabus finish karduga, 12th me mains ka syllabus pura karke ek NIT leluga, aur agar NIT nahi nikla, to me mere city ki local collage se b tech karke bank po ki naukri nekal luga... but the doubt still lingers.. kya mera future self mujhpe thukega ki mene 11th me game development ke vajah se nit nahi nekal paya? 11th ki tayari nah kari? (meaning just rs agarwal, and chem and physics syllabus for 11th exam, no extra fluff..).. Kya mujhe koi coaching jani chaiye? Kya me miss out kar duga agar me ye nahi karuga? Please answer!