Anecdotally, I've performed Rocky Horror in theaters showing Inside Out 2 - when those audiences would clear out; kids and families made up a far smaller share of the audience that I expected. If it can withhold DM4 enough to stay over $30m, it's gonna stay incredibly strong - hell, if Disney spreads the wealth when Deadpool and Wolverine opens, it could stay over $10m weekends until August.
4th weekend: $31m (-46%)
5th weekend: $22m (-29%)
6th weekend: $15m (-32%) <- should hit $600m around this point if all goes well.
7th weekend: $11m (-27%)
Interestingly, it's followed Barbie pretty closely; as it stands, IO2 is currently $11m ahead of Barbie at the same point in its run; This weekend should close the gap, but the lead should stay the same. $650m or bust!