Generational wealth idea

Came up with an interesting idea. If some of us are trying to create generational wealth for our families, should we “tie strings” to our bitcoin before releasing it? I don’t want my son or future descendants to blow through the asset, so I was thinking of making someone pass a test, thus teaching them about money and bitcoin in general, then rewarding them with bitcoin as they continue learning. Kind of a familial proof of work, if you will, to appreciate the time it took to earn it. And also to avoid wasteful spending of sats.

Only hang up would be the release of it in my will. How can that be accomplished? Multi-sig?