A ceiling caving in is read as pressure from above — expectations, authority or worries — becoming too heavy. Dream books treat it as an image of feeling overwhelmed, not a warning of real events.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.