see ashish try to remain calm .U have very little time to study according to cbse point of view. If u wanna get good marks try to isolate ur self from all the possible things by the look of it u must have been spending a lot of time on jus worrying and not studying isnt it, wheneverr u must have taken books to study u must be thinking how to complete one chapter or many chaps per day (as u say ur being hyper anxious) but end up being jus too lazy at the end see never be hyper anxious u must be saying u wanna study but when the time comes u dont 4 u days jus keep on passing by isnt it  time flies for u see try not ot worry and meditate, meditating before u study will help conquering fears of failing ur exams and for now try to set goals which are very very less hectic u all may all think that it wont be possible to study this way but it is if u study in so called quanta packets every day u wont be able to find any thing very difficult try not to solve problems now it wont get u anywhere try to just understand the concept go to ur  teacher and request her to help u study try to let her take ur extra classes she surely take ur tuitions .any one would do it if u ask politely and with wih botom of ur heart ask her to help u.Try to sort out with her wats wrong shell surely find  a way   it may be shame full for u now but wont be later plz for sake of ur family go too ur teacher and ask her to help u then shell explain u the concept for sure and cum home be calm and study with utmost concentration try to write down the theoritical part and go throug the examples once ur through ur problems solving wont be a question