Question regarding monoliths

So I ended with the monoliths and started the empowered monoliths now, one question that pops my mind is that when you complete an island of a monolith it puts the island in completed…Is there any way to reset this so you can do the islands closer to the monolith entrance over and over again, or to farm the same island that gives you let’s say runes over and over again ?

Also if you reach a point on empowered/ corrupted monoliths that you cannot do anymore, is there any way to reset the whole timeline and corruption to start over and get stronger ?

There’s an echo type further out that lets you reroll uncompleted echoes and another that lets you redo completed ones again.
And once you increase corruption, you’ll always have an echo at the start to lower it again.

but you just cannot reset it completely. Just find echos to reroll or make the completed ones roll able again.

There’s also the echo that increases corruption, which will fully reset and reroll the web. But no, there is no way to just farm the same echo over and over again.