An interesting development:
https://www.boxofficemojo.com/counts/chart/?yr=2019&wk=20&p=.htm
Endgame, as expected, it's having a decline of theater count after this Thursday: It's losing 442 theaters from it's current wide release 4.662 theaters, so a -9.5% drop, going for the weekend with 4.220 theaters. Infinity War lost it's first theaters also going for its fourth weekend: it lost 472 theaters from its wide release of 4.474 theaters, so a -10,55% drop, going into that fourth weekend with a 4.002 theater count.
Pokémon in the other hand is actually increasing 1.1%, going for 4.248 theaters, when up until this Thursday had 4.202. John Wick 3 starts its run with 3.850 theaters.
What I make out of this: good sign for Endgame weekend numbers, since a bigger theater count might indicate that EG will indeed recover over IW. WB is going all in with Pokémon, but I still don't see how it could possibly top Endgame, regardless of the bigger theater count, shorter running time and Endgame going for its fourth weekend.