>>10105184>>eventually disassemble and bin the parts to make way for new setsBig mistake for a kid imo.
My daughter is 4 and when she was 3 she loved Yoshi, so I got some Mario Lego sets. She had 0 interest in any of it outside the brickbuilt characters which she played with loads.
When she turned 4 earlier this year I got her some Jurassic World sets and she loved playing with them, but wouldn't build stuff. But playing meant breaking bits off, which meant she'd have to try and put the bits back and then the building aspect started to click.
Her creations are pretty basic, obviously given she's 4, but nowadays she'll ransack my sorted parts drawers and bring me a new creation. This one is Pikachu. I recently bought her a couple Classic boxes and she's been making stuff like monsters, dinosaurs and forests.
So yeah, let your kid play with the sets for a prolonged time. Disassembling them makes them seem transient, makes building by instructions seem like the be all end all of Lego.
Let him keep his sets built and then at some point buy a fat classic box and just start making random shit and intentionally ignore colour consistency. He needs to see you make basic shit. If a kid sees someone draw a stick figure, they'll want to draw a stick figure; if they see someone draw a digital art masterpiece, they'll just think "it's cool you can do that".