This is rather grim, & frankly, it could all go tragically at any time. They've been unable to find a back door, a trained diver has died during the 2.5 mile swim to reach them, trying to pump out water is having nearly no effect, more rain is due on Sunday. The cave's oxygen flow is about 5% below normal & dropping, & even though they likely have O2 tanks by now, the effects will be very detrimental. Those poor people inside are struggling for their lives, & that is the absolute worst condition to be in, if undertaking a 5 hour treacherous dive is to be considered
However, it's all time sensitive as to what call should be made. Tandem diving them out very soon may be the least treacherous option. You're choice is do something now, & maybe lose some of them, or keep waiting & maybe lose all of them. Plus, if making them dive out is the best option, the sooner the better, because their condition will undoubtedly deteriorate. This is a real shit situation TBH