quick asparagus question

If it were me... I would leave them (sorry!)   I transplanted some two years ago, this year will be my first harvest from those crowns... it is not worth risking weakening the crowns.... that is just my opinion...

Having to be patient with asparagus is not just about not weakening them but also allowing them to bulk up and spread underground (a bought crown is only a few inches across but a mature asparagus shouldl be at least a couple of feet in diameter at the crown and a lot more than that in root spread.)

Did you move them before or after the growing season last year?
If they've already had one growing season in their new location, are of a good size and seem vigorous I'd certainly be more than tempted to impress my brother (funnily enough I've got a brother who lives in France as well!)

(It's always a good idea to err on the side of caution with them, but I certainly wouldn't be waiting another 3 years!)

I would pick them for a short time and then leave them to build up.

Maybe pick until brother arrives and then stop?