At 7 months, you should never give over-the-counter cough and cold medicines, as they can cause serious side effects in babies. Since his symptoms are frequent and persistent, please return to your pediatrician or seek a second opinion. He needs a professional evaluation to rule out allergies, environmental irritants, or asthma-like conditions. For safe home relief, use saline nasal drops and a bulb syringe to clear his nose, run a cool-mist humidifier in his room, and keep him well-hydrated with breast milk or formula. Do not start any new medications without a doctor's direct prescription.

For a 2-month-old baby, over-the-counter cough and cold medicines are not safe and should be avoided. To clear his blocked nose, you can use saline nasal drops (normal saline) to loosen the mucus, followed by gently suctioning his nostrils with a rubber bulb syringe before feeds and sleep. Keeping a cool-mist humidifier in his room and ensuring he feeds well (breastmilk or formula) will also help soothe his throat. Please monitor him closely. Since he is very young, if he develops a fever, struggles to breathe, or refuses to feed, please consult your pediatrician immediately for a proper evaluation.

Your child's symptoms, especially the severe ear pain causing crying at night, strongly suggest an ear infection (otitis media) complicating a cold. Please consult a pediatrician promptly for an physical ear examination. For immediate relief, you can give pediatric paracetamol (acetaminophen) or ibuprofen, dosing strictly according to their weight, to ease the pain. Use saline nasal drops to help clear the blocked nose and a cool-mist humidifier for chest congestion. Avoid giving over-the-counter cough and cold syrups to young children without a doctor's prescription. If a bacterial ear infection is diagnosed, the pediatrician may prescribe antibiotics.

For an 8-month-old baby, over-the-counter cough and cold medicines are not safe and should be avoided. Instead, you can safely relieve his congestion using saline nasal drops and a bulb syringe to gently clear his nose. Running a cool-mist humidifier in his room and keeping him well-hydrated with breast milk or formula will also help. If he has a fever and is uncomfortable, paracetamol can be given, but always consult your paediatrician first for the correct dosage based on his weight. Since the cold has lasted 8 days, a quick visit to his paediatrician is recommended to ensure he is recovering well.

For a one-month-old baby, you should avoid giving any over-the-counter cold or decongestant medicines, as they are unsafe for newborns. The safest and most effective way to relieve his blocked nose is by using over-the-counter saline nasal drops. Place 1 to 2 drops in each nostril to loosen the mucus, and gently suction it out using a bulb syringe or nasal aspirator. Using a cool-mist humidifier in his room can also help. Because this congestion has lasted for 20 days, please stop his current medication and consult his pediatrician promptly to identify the underlying cause.