What should parents do to nourish and manage their breastfed baby who experiences indigestion and diarrhea, with stools appearing two to three times a day, light green in color, and lasting for three days? The baby is also irritable, easily tired, and prone to waking up during sleep. Laboratory results indicate indigestion, and the baby has taken Simethicone and Bifidobacterium Triple Live Yeast Powder. How should they proceed?