Charlie could sit in a Bumbo at 3 or 4 months... meanwhile, Olive is 7.5 months (6.5 mos adjusted) and she still can't sit comfortably in a Bumbo! Part of it might be that Olive is skinnier and taller, and doesn't fill out the seat of the bumbo like her shorter/plumper brother haha! Still though... she's pretty old to not be sitting in a Bumbo.

At what age could your LO sit propped up in something like a Bumbo? What about being able to sit up unassisted?