There's a method of cloning that's very reliable for plants late in flower it's called air layering.
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You're rooting them on the plant.
Some rock wool, sponges, coco any medium will work though some are more practical.
Basically put a sponge around the prepared site (node/rooting get) and wrap it with plastic or clingfilm.
You can buy these little gadgets they're more convenient to use.
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Ime it's important to strangle the stem, you need to impair the flow of sap but not stop it.
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60 days in flower isn't a problem roots grow until the very last day, re vegging the root ball is always an option but it's less convenient.
Taking cuts in flower wasn't intended as a better cloning method, it's intended as a easy care selection/genetic holding method that requires minimal space, light or maintenance, it gives us the chance to smoke the gentics before investing effort/space to them, it's not unusual to get attached to them after caring for them for weeks
I didn't aim to grow them "next" I planned more seeds next crop then if there was anything special I could grow the re veg next time, that removed any need for them hurrying them up.