This weekend, it’s the holdovers which will do the heavy lifting at the May box office before Disney/Lucasfilm’s Mandalorian and Grogu arrives over Memorial Day weekend, hoping to make a difference. 20th Century Studios’ Devil Wears Prada 2 and Lionsgate’s Michael are respectively looking at third and fourth weekends that are north of $20M while New Line’s Mortal Kombat 2 is looking to decline around -60% to about $15M. Middays this week have shown Devil 2 and Michael in near close fights: Both grossed $4.7M on Tuesday and yesterday Michael was No. 1 for the day with $3.3M over Devil 2’s $3.2M. Working to Michael ‘s advantage, he’ll regain a significant amount of PLF and Imax screens this weekend. Meanwhile, Michael passed $604M on Tuesday, with $353.8M abroad and more than $250M domestic (the cume is now $253.5M). The domestic cume for Devil 2 stands at $154.7M. Note, Mortal Kombat II came in at $38.5M in its North American opening last weekend, which is very close to where we spotted it on early Sunday AM.…