Nursery going kids (If they were listed in a school) have mostly attended on-line classes solely. It looks unlikely to me that the government can permit your kids to attend Nursery standard once more.
Your child is going to be eligible for kg this year. Since Old Delhi is very strict for age criteria do not register your children in preschool as they might solely be capable of applying to kg.
Even there are age limit criteria in Old Delhi nursery schools that are way too hard for getting into admissions, hoping that government would clear all the doubts and shortly begin the method. Everyone seems to be getting affected in some way or the other, whether or not they are kids or adults.
No data has however been discharged by the schools or by the government. We should probably wait with patience.
Meanwhile, keep acting on your kid at home and give the most effective possible pre-school education you can. Once admissions begin in Old Delhi, apply with full efforts, aim for the best school, and wait to check if we have got a vaccine or not.