Aww sayang lah tengok baby baru sebulan dah selsema, memang ikut kakak dia lah tu! Honestly, ubat memang susah nak bagi at that age, so best approach is comfort measures, keep him warm, make sure dia getting enough milk (either breastfeeding frequently or formula), dan boleh guna saline nasal drops to help clear his nose so dia boleh breathe and feed properly. Few of us mums dengan babies yang young akan monitor closely untuk signs macam sulit breathing, high fever, atau takut nak feed, if dia shows any of those, kena jumpa doctor straightaway sebab immune system dia baru developing lagi. The good news is kebanyakan babies recover on their own in a week or two, tapi sebab age dia yang super young, aku think best you check with your pediatrician just to be safe, they might want to see him just to make sure everything okay.