BPCL and Britannia to be replaced by JioFinance and Zomato, when will index fund reshuffle ?

I have kept an eye on BPCL from past 6 months waiting to buy it in correction so I want to know when will index fund sell BPCL from their portfolio and buy new stocks # My thinking is if these MF sells them in open market their price may fall drastically, which gives me an opportunity to buy it # ===NEWS=== NSE index rejig: BPCL and Britannia to exit, Jio Financial, Zomato to enter Nifty 50 effective March 28, 2025 ===NEWS=== so index fund will sell them exactly on march 28 ?