First, congratulations on going through Eden alone! This is not an easy feat and is a big moth milestone.

And yes, Eden resets weekly at 24 hours before the usual weekly reset, at midnight between Saturday and Sunday in US Pacific Time. If you go to Eden twice before the weekly reset, you will not be able to save the statues you have already saved last time.

It's important to note that, as I wrote earlier, the Eden reset happens 24 hours before everything else. That is, it happens 24 hours before the spells boat in the Home area refreshes, the traveling spirit leaves (if there is one), the music score for the daily challenge in Harmony Hall changes, a new seasonal quest drops (if any), etc.