What am I doing wrong? (Starter and Levain) - Flour Water Salt Yeast book
You've noticed the very normal life cycle of a starter (or levain using Forkish's preferred terminology). An initial burst of activity and after day 4 a quieter period. Some even 'go to sleep' but it seems yours didn't quite go that far and just quietened down. Yours seems healthy and is on the right track. Recipes for creating starters rarely describe this and just assume it'll go from strength to strength but as living things they rarely follow recipes exactly. If I were you I'd carry on but use a smaller jar/tub and a 1/4 of the amounts he recommends. No need to waste huge amounts of flo...