This sounds like the sort of route I hope to take with my son when he's old enough. We've already made it past a year without ever sitting him down for TV/tablet/phone time (except video calls with grandparents) but I'm sure it only gets harder from here.
I'd be interested in reading any more you've previously written on the subject, or any other sources you've based your guidelines on!
Good start! I feel like 90% of it is just putting in the effort and being intentional. Our son didn’t watch TV until about 18 months and the pandemic put us all in the house without childcare and our work went into overdrive. He went too hard on it for the first few months until we figured out how to balance things. We had no intention of starting that young but that’s how it happened.
I’ve not written on the topic. The main advice I can give is to always be prepared to channel their energy/boredom. We take a backpack of small toys and sticker books and putty/play dough into dine in restaurants. My kid really likes to know what to expect so we prepare him when we know he has to do something boring. Like we went to a funeral when he was 2 and we explained to him that we dressed up to show our respect and we have to sit still and be quiet to show respect. We told him adults might be crying because they’re sad. That’s kind of a weird extreme example but we do small versions of this pretty often.
Find ways to explain to them that even if other kids do something “we don’t do that”. This varies by kid and age. Be consistent and make sure everyone he is with understands (parents, grands, etc). Or set conditions, like only at grandmas or only on weekends. We set a lot of timers. You can play Mario for 20 minutes, he’s gotten to where he just says “yay! Hey Google, set a timer for 20 minutes” lol
I'd be interested in reading any more you've previously written on the subject, or any other sources you've based your guidelines on!