I don't have kids of my own that have been that age yet but have known 2 very bright 6 year olds that had meltdowns, and personally I don't think their parents handled it particularly well (one parent would actually poke the kid, and sort of make fun of them, which I thought really seemed disrespectful of the child). Anyways, both seemed to outgrow it or manage it by the time they were about 10. Doesn't mean fine tuning how to handle it isn't a great objective as maybe there is more that could be done... but if you are (as it sounds like you are) just generally respectful of him and make it clear no one is resenting him or his emotions, then you are probably aren't enhancing the meltdowns. His own desire to be in control plus plenty of time will probably work wonders.
Polly
