Clogged tear duct

La

Son is 4 weeks old and since 1.5-2 weeks his right tear duct has been clogged. Ped gave us eye drops but said not to use them unless it’s really goopy or weepy. We’ve been wiping it and massaging it with a warm washcloth for nearly 2 weeks. Tonight it was swollen shut when he woke up from a nap. Any other tips to help? It’s not infected...she said it’s just a clogged tear duct