Most probably Toxic will be postponed. Dhurandhar 2 will have the biggest opening (60 crores gross) leaving fewer theatre for other releases. Same for Dune 3 and Avengers, they won’t probably clash on same day.
Also doing a bit of prompting revealed, Avengers did about 400 Cr gross while Dune 2 about 40 Cr. They are not in the same league. I’m rather excited about odessey by Nolan as film buff.