T is 15 months. I noticed yesterday that his left eyelid looked droopy. Today it's much more noticeable. It's not extreme or anything but I've never noticed it before so I can only assume it's just appeared.

I googled it, which was a mistake. Should I take him to the doctor for it? Can it be something that can wait until his next check up (in 3 months) or should I take him now? What would you do? Any experience?