After fruiting I cut all leaves off & give them a feed & good water, leaves soon reappear &runners to propagate new plants, keep them on if you want more plants. If the plants are new this year only allow 1 or 2 runners ,cut others off & only let the first ‘baby’ on the runner root, cut it off after first one this will not cause undue stress on the mother plant& allow it to grow bigger & better for next year