I don’t know how common it is, but I’ve definitely seen almost this exact technique being taught to native-speaking English kids in school as a way of helping with spelling.

I suspect some people do this naturally as well: sometimes for me it can be difficult to see “Wednesday” without hearing a little voice saying “wedd-nez-day” in my head. What’s a bit weird is that the idea doesn’t seem to have a common name. Maybe someone else will find it and let us know.

Welcome!

Nice work, this is great to see