Hi,i need to lose 20 kgs in 7 months,please help!!!?

hi, i am 22,5'4'' height,and weigh 83 kgs.i need to lose 20 kgs in 7 months.i heard that kapalbhati pranayam helps a lot in reducing weight.is it true?yes i am maintaining my diet.please suggest any regular diet to lose weight fast with perfect timetable(what and when to eat).i am a pure vegetarian.but yes, i can eat eggs(if suggested).please help me!!!i am desperate.Thanks in advance.and wish you all happy new year in advance.