Could there be a relatively peaceful solution to the shard problem?

[Iscah]

My point to all this is basically they're giving specified dates during canon events and not changing the said time bubble to be outside of the year 1577.

That is, explicitly, their intention with the time bubble. However many years' worth of adventures we cram into it, the writers are not required to move time forward, keep track of changing dates or "x years since", or increase characters' ages.

1577 is an extremely long and stretchy year and we have clearly spent more than a year of time within it.