Simple: if you feel your 2.5 month old daughter's cough is severe, & she is unable to feed, she needs re-evaluation by Pediatrician URGENTLY to rule out chest infection. Lanzol is used to decrease acidity in stomach: used commonly in gastro-esophageal reflux disease; but unclear why prescribed here unless baby was a preterm, with recurrent wheeze secondary to reflux? Coconut oil supplementation is given till targeted weight is achieved, & then stopped abruptly: with follow-up, to ensure weight gain continues even after supplement is stopped.