How not to waste class 11th? Serious help needed!

Physics Rotation tak syllabus kiya hai. Mains se upar lvl ka h phy Chemistry Equilibrium tak. Ncert Ivl ka h maybe bilkul bhi practice nhi Kari 5 mahine isme Maths Straight lines tak. Maths me koi koi ch mains Ivl ke ho rakhe hain and kuch ch ko padha tha but ni Kara to sab ud gya h Problem ye hai ki koi bhi chapter strong nahi hai. Har ek ka sirf halka idea hai, but depth mein kuch nahi aata. Mujhe ab samajh aa raha hai ki maine 11th kaafi waste kar diya h Abhi se April Tak ky karna chahiye exactly pls suggest karo Kaise effectively revise karoon?Aur kis tarike se apne weak chapters ko strong banaya jaa sakta hai? Like syllabus completion me dhyandena chahiye ya pichle ch ko strong karne me, bas kuch hi time bacha h 11th me bachalo yaar Main seriously ab apna time waste nahi karna chahta.