I seriously recommend you'd find someone locally who could give/sell a bit of their sourdough starter :)

Sharing is caring. I've sent some of my sourdough starter to Ireland too!

But no, I don't usually have a specific rhythm. If I want to make sure I'll have freshly baked bread in the morning, I'll split the dough to trays and bake them one by one, leaving the next one to be baked in the morning. This works well with sourdough, but not too well with regular yeast.