It's still 1/3 various seeds, but by now my sour dough has regained its strength, so it rose a lot this time. I might have forgotten to feed it once...

Of course comrade, cum come over and take a bite!

Well, once you get it started following your average PITA instructions, it is enough to feed it once a week, if you keep it stored in your fridge. That's incidentally how often I bake bread.

Just give it about 1.5 - 2x the time to rise, if your sourdough is still cold.