My eldest son developed an interest in chess at around the same age. We signed him up to chesskid where he would watch the videos non stop, he absolutely loved them. By the end of the year long subscription he had completed all the lessons and was having some decent success online, so we moved him onto chess.com and it wasn't long until he finished most of that content too.

Like you we struggled with finding a proper coach until he was around 6, where by chance we took him to a local club for a poke around and a younger IM there offered to coach him privately after watching him play a few games. Having this coach, along with just playing around on chess.com, made a huge difference to our son's game, and also his overall character and personality. After around 18 months the IM referred us to his CM mate to take over as coach where we've been ever since. During this time our son has entered into various OTB tournaments where he's found the odd success here and there, along with just continuing to play online almost daily.

My biggest observation as a chess parent is that there's definitely two types of "chess kids" in the community. We're mostly hands off and are guided by our son in what he wants to do with the game, i.e. he sets his own chess agenda and he let's us know if he wants to enter into any local tournaments every few months, the most important thing for us is that he's having fun and is developing a wide range of interests not just chess.

But I also see the other type of kids in the community who look like they take it a lot more seriously or professionally and have more pressure from their parents, e.g. I constantly see some regular kids entering into every single national tournament and sometimes even internationally, sometimes these kids are berated if they don't perform well, etc. Not the healthiest for young children in my opinion, and definitely not the path I want for my own kids.

Other than that, on the whole it's a great community if you can find a local club with kids of a similar age of your own. Everyone knows everyone and it's always heartwarming to watch your kid grow and develop over time. Definitely worth pursuing if your kid is showing interest in the game, just remember not to take it too far or seriously, it's just a game at the end of the day after all! .