Hii!
NEP 2020 will be implemented slowly in all the schools and universities across India. There isn't a particular date as to when a particular unit will implement it because it is a time taking process. NEP will be implemented in a phased manner slowly across country. 2020 wasn't a feasible year to implement it because of the disrupted academic schedule. But, till 2025 all the schools will be rationalised and by 2040 all the Higher Education institutions will become multidisciplinary.
Hope this helps.
Good luck!