i call it being "Tigger" - as in Winnie the Pooh. Tigger is "bouncy bouncy bouncy bouncy fun fun fun fun fun!" & that's what a little hypomania is like - FUN! but like you said, we can't let it go & morph into psychosis & a true hypomanic state (which mine come with delusions & hallucinations). so we have to squash Tigger. which i hate. in squashing Tigger i don't experience the same return of problems that you do, except for perhaps the anxiety. Tigger doesn't get anxious. but if you get PAST Tigger, then the anxiety comes. and the anxiety comes BEFORE Tigger.
ymmv. lol