Four Year Old with a Backcast

Some items of note here:
(1) On taking out his custom made fly rod for the first time in a while, JD immediately walked to the edge of the dock, flipped the line behind him and laid out a cast on the water. Wow. Note that in the first pic below you can see the rod coming forward and the line in a loop above his head. I had to warn several people to avoid standing behind us... hehe.
(2) On several occasions, while fishing, JD offered commentary regarding whether or not the fish had eaten the fly (we could see plainly all the fish around the fly).
(3) At one point he said "Oh - there's a big one Dad," and he picked the line up off the water, walked to another spot on the dock and flipped a cast at a big LMB! Nice!
(4) I'll never understand why parents so often give kids worms on giant hooks or big ol' beetle spins to fish for panfish. The sunnies cannot physically place those hooks in their mouths. JD walked up to the crowd on the dock with a #18 beadhead nymph and immediately banked several fish... to the astonishment of the kids who were trying to stuff dictionaries in pea-sized fish mouths. I cut a jig off one kid's line and gave him a nymph - he caught three sunnies in the next five minutes. Happy kid.
(5) I'm experiencing micro-management-dad syndrome lately... and it worked its way into our outing here. James had 1000 hits on the nymph today. He probably fought ~15 fish, but I had to hook ~10 of them for him... We'd sit and watch the fish destroy the fly, one after another... and I say "lift up the rod J" over and over... and he stares blankly at the situation in the water. The only fish he hooked himself were those that happened to swim away with the fly in mouth. So the dilemma is that I see the pure joy on his face when he feels that sweet hookup and resistance... so I want him to be able to do that for himself... but I feel like a jackass when I sit there on his shoulder saying over and over "lift up the rod J" and "OH - pick up the rod man!" etc. Funny thing is that he has explained to me and others on many occasions how fishing works: you cast the fly into the water, and wait for the fish to eat it, and then you pick up the rod! Anyway... kind of a funny little thing. The kid isn't even four yet... geez. I've just been trying to decide the right thing to do in those spots... I think I'm leaning toward letting him work his way to hooking up by himself.
(6) Little Brother really loved seeing those fish. He was literally cackling each time JD showed him one. Pretty cool.