Is possible "jump" a density?

[Infinite]

Yes it's possible, I think. Adepts are able to harvest themselves when they make contact with intelligent infinity. There may be a correlation of the densities with the four Buddhist states of enlightenment, of which there are four. One could say that sotapana 1st stage is harvestable to fourth density. An Arahant 4th stage would be a completed being, 8th density.

But in all channelings of L/L the Confederation's entities are clear that they will need million of years to ascend to a new density and that the progression is sequential.