lol @ your sigThe question is, can the juubi keep evolving after it's sealed by Obito?
it wont ever become its full(100%) form without kurama and hachibi. It can achieve its final transformation, but cannot reach its form it was before it was split. What it is doing now, is storeing up its energy to transform again. Similar to how kurama is rechargeing.The JUUBI is absorbing energy and storing up chakra, its been prophesied That this time it will signal the END of the World, so it aint going away :I It will continuing absorbing its essence in till it becomes full form
Then what FINAL is it gonna be?? a giant zilla?!it wont ever become its full(100%) form without kurama and hachibi. It can achieve its final transformation, but cannot reach its form it was before it was split. What it is doing now, is storeing up its energy to transform again. Similar to how kurama is rechargeing.
To the op. It doesnt run on individual bijuu chakra. It just mixed up all the bijuus chakra toghther to reform its chakra. Lacking most of hachibi and kurama chakra, only makes it somewhat less powerful.