I had to read the dictionary definition to remind me, but I think “liminal” is the best word to describe my feelings right now.
liminal
adjective
1. occupying a position at, or on both sides of, a boundary or threshold.
2.relating to a transitional or initial stage of a process.

I observe my wife transitioning into her new career, launching her own business.
My eldest daughter, about to start high school, my youngest about to change primary schools.
Even my day to day has become liminal in it’s nature.
Am I uncomfortable? Not really, but I think it elicits certain feelings depending on what it is I’m observing. It’s a complex mix of pride, grief, joy and love. Different dimensions of love.