Thank you guys for sharing your experience!
My delenatii is a very small plant. It has only 1 and half grow (the half is the oldest fan which doesn't have all its leaves anymore) so... according to what you said... it's possible that it's pausing waiting to bounce back.
Oh my God yes. The foliage is sooooo beautiful! It's mesmerizing! I'm so excited to see this plant to bush up a bit, in particular, to have more leaves to look at

They look like someone had scribbled on them with a pen!