Hello! I received a string of pearls 2-3 months ago with a bunch of other succulents in one pot. Initially, I had been watering once a week (I live in the northeast) and leaving it on the windowsill every day - they were doing well and even growing new buds. However, a month ago 3 of the pearls deflated overnight - I was worried it was being over-watered so I re-potted into its own pot and only watered once every 2 weeks. Last week I noticed that the new growths, tiny pearls, have shriveled up. Thought it was too much sun so didn't expose it to sunlight as much. Yesterday, 2 additional pearl began deflating - it had only been a week since it was last watered but I was worried it was now being under-watered, so I went ahead and watered it. Here are photos of what it currently looks like (https://imgur.com/a/DozIKnq) - you can see the 2 shriveling pearls on top and then a up-close shot of the tinier buds shriveling - help!
Does the new pot have drainage? Note that too much sunlight does seem to affect it, so what you are seeing could still be an effect from that: Senecio rowleyanus - Wikipedia