If I read correctly their fine print they have 45 + 45 days to respond. Rest assured they’ll take their time.
On the other hand I don’t think you’re the only one requesting either deletion or a GDPR archive right now so summer break might be slightly postponed or crunched for some people up there. Just a wild guess but still.
I’m sure there are people here with more experience that will be glad helping you comprehend what is and what can be done before you come up preposterously “establishing guidelines”.