My DS is 6 (possibly AUHD - on waiting list for a diagnosis) he’s never been particularly interested in bikes or learning to ride one. We’ve taken him out a couple of times and he’s not really bothered.
However he loves racing the park on his scooter. He’s also a good climber, runner, walker etc.
But most of his friends are on bikes now. He definitely couldn’t manage without stabilisers but he actually pedals backwards, he can’t seem to get the hang of it at all.
We will keep going with it; but he seems more interested in carrying on his scooter.
I didn’t learn to ride a bike until I was 10, I’m AUHD , but I’m sure I also have dyspraxia.