The shoots root really easily in water Helen so, depending on the size of the plant, maybe take a couple of shoots as insurance. As @Alan Clark2 in Liverpool says though, it will dry out very quickly if you are here in the sunny south and likely fully recover
"The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it." Sir Terry Pratchett
I'm pretty sure that will recover just fine although you may lose a few flowers in the process. Give it a week or two and it will probably bounce back, they are very resilient.
I am rubbish with flowers (more an edible plant type of gardener) so I have kalanchoe, aloe and cactus as house plants as my daughters don't like applying a death sentence to any gifts
"The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it." Sir Terry Pratchett
To be honest Helen I'm surprised the soil has retained that much water. I use a cactus compost for mine which is basically a mix of grit, sand and MPC and the water just runs through. Mine tend to get watered when I remember, usually every 2-3 weeks or more and I water them, let the water drain through and then empty the excess out.
As for food they don't need much, anything based on phosphorous would do but very dilute and infrequent. Because I grow veg I use a drop of Tomorite in lots of water but I think you can buy special stuff for cacti and succulents.
I am really no expert so this is all from my own personal experience, maybe someone with a bit more knowledge will chip in.
Good luck anyway
"The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it." Sir Terry Pratchett
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I am rubbish with flowers (more an edible plant type of gardener) so I have kalanchoe, aloe and cactus as house plants as my daughters don't like applying a death sentence to any gifts
As for food they don't need much, anything based on phosphorous would do but very dilute and infrequent. Because I grow veg I use a drop of Tomorite in lots of water but I think you can buy special stuff for cacti and succulents.
I am really no expert so this is all from my own personal experience, maybe someone with a bit more knowledge will chip in.
Good luck anyway
https://www.flowercouncil.co.uk/campaign/july-2017-kalanchoe-houseplant-of-the-month#:~:text=Kalanchoe%20prefers%20a%20light%20to,dry%20than%20much%20too%20wet.