Roster construction is completely on Woodson. If we didn't have enough guards to run the system he had claimed to want then that is on him. Our lack of guard depth last year was foreseeable and Woodson even held a scholarship back.
Generally I would say that it would take a couple years to convert a roster to what you want to run. However, with the portal and NIL, there is really no excuse now. Look at CCC and how he flipped the roster for football. That's much more work than flipping a basketball roster that only had 13 spots.