Keepe patience.
Never use lomofen in children, it can cause many complications.
ORS as demand, tablet Zinc (20mg) once daily or syrup Zinc 5 ml once daily, Enuff-10 sachet twice a day, continue darolac, avoid milk in diet, give curd and buttermilk as natural probiotics.
Next Steps
if not improve consult Pediatrician, do not treat your own.
Health Tips
maintain good hygiene, frequent hand wash with soap and water.