Per week you have a max of Sun Scrolls and Moon Scrools you can acquire. Just reach the max amount and you should be fine. You can see if you reached the max amount if you click on Daily Practice and look at the bottom of the panel, you`ll see Weekly Sun Scrolls and Weekly Moon Scrolls.

ooooh Thank you, haha so just maxing them out every week gives me the activation?

Exactly xD

i'd just like to correct a mistake: you don't need to cap moon scrolls or sun scrolls to achieve this.

you can hover over the flame to see the required amount of moon and sun coins that you need to renew the buff, as well as the dead line by which you need to achieve that amount:

as you can see, capping moon scrolls is not a requirement. neither is capping sun scrolls (you only need 5k suns to renew the buff)