I got a baobab three years ago and have been letting it grow while I figured out what to do with it. Three years ago, just about this time of year, I brought it inside, half the leaves fell off, I found lots of bugs on the remaining leaves, sprayed a lot, worried about it, and long about March lots of leaves popped out. I took it outside then, and it did fine all summer. Two years ago, repeat. Last year, repeat. I have noticed a pattern. I brought it in two weeks ago when temps dropped and the pattern is repeating, so I really am not worrying about the tree now. If pattern repeats there will be a few green leaves all winter, maybe a quarter of what it had a month ago, so I think I could call it half dormant now.
I want to chop the top off and encourage it to be shorter. Also, it is probably time to repot since it has been in the same dirt now for years and there are roots growing out of the drain hole. Now? Wait a while after all the bugs have been dead for a while? March just when new leaves are starting?