Could It Take More Than Six Months for Botox Under Eye/crows Feet to Go Away?

Botox typically lasts 3 months on average, and sometimes longer depending on the patient. It would be very unusual for the Botox to last longer than 6 months. I would recommend following up with your physician who performed the injections. I hope this helps, and I wish you the best of luck. 

2 Units of Botox won't last 6 months...Botox typically wears off gradually and considering the very small dose, it wouldn't be present at this point. I am not sure what "a moderate amount" means, but six months is not common, especially around the eyes.

Botox usuallly does not last longer than 4 - 5 months at the most.  You had a very small amount of Botox injected to this area so I would not expect that your symptoms are related to botox at this point.