I’ve had my Thanksgiving cactus for one year. I never repotted it but it seemed to be thriving and growing up to a few months ago. However, a few weeks ago segments started to fall off until half the plant fell away. Any idea what caused the plant to drop entire stems and how to prevent it? 2) Any advice on how to propagate the dropped nodes? How do I know they’re ready for soil/ do I replant in the old pot or smaller pot? All together or separately? Thank you!