Oh, the watery eye on one side specifically, that's actually a classic sign of a blocked tear duct (nasolacrimal duct), which is really common in babies and can persist for months even with eye drops, so the drops alone often won't fully resolve it. From what I've heard, if it's just the one eye staying watery despite treatment, it's worth asking your paediatrician for a referral to a paediatric ophthalmologist, because they can properly assess whether the duct needs gentle probing or just more time. My friend brought her baby to KKH's eye specialist for the same thing, and she said the doctor explained that most cases resolve on their own by 12 months, but they showed her a specific massage technique along the side of the nose bridge to help drain it, that's something you can ask about too. On the nasal side, some mums find a saline rinse like Sterimar Baby gentler and more consistent for clearing congestion than drops, though results do vary, and allergic rhinitis can also cause both the nasal blockage and watery eyes together so that angle is worth exploring. Ultimately, since it's been going on a while and drops haven't helped, I'd really push for a specialist review rather than just managing symptoms, better to get a clearer picture first.
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