Me too! I stayed at Kidani a few weeks ago, before Jambo opened fully. Two things helped. One, I requested a room closer to the Jambo side-they gave me a room in the furthest "pod" and I took the elevator down and over to Jambo to eat a couple times. The other thing was that when I wasn't eating at Jambo, I got "Sanaa to go" and took it back to my room to eat. If I didn't finish my meal, the refrigerator was right there for my left-overs, and I had the microwave to reheat left-overs. Saved a lot of money on food that way!
How far out are you trying to change? DVC rooms at Jambo haven't changed much - they've been available. But there are far fewer at Jambo, so trying to switch only a couple months out, or during a busier time, could be tougher. That being said, there have been a lot of folks cancelling rooms - if you put something on a waitlist or keep watching, something might pop for you.