Cast swarms with virgins keep pouring out of one hive — catch and combine, or let it play out?

Perthshire, 7 years. One colony beat me to it this spring — prime swarm left around June 10 (caught it, it's fine), but the parent hive is now throwing cast after cast. Three so far: a decent football-size one on the 19th, then two progressively sadder ones, the last barely a grapefruit. Each with a virgin aboard presumably. The parent must be getting seriously depleted. Options as I see them: (a) hive the casts separately and let each virgin get mated — but the small ones probably lack the mass to build up before our season ends, (b) catch them, find and pinch the virgins, and newspaper-combine the lot back onto the parent or the prime, (c) go into the parent and knock down every remaining cell bar one to stop the bleeding, plus combine the casts. Leaning (c) but curious how others handle a hive in full cast cascade. It's a good genetics colony otherwise, which is presumably why it's so swarmy... ha.