Sneezing after quiting

With the exception of 2 days, I've been sneezing every day for the past 3 months when I quit methadone. Anyone experience this? Any idea when it'll stop?

When I've quit other opiates in the past, the sneezing would last a few weeks maybe. In my current situation, my last dose was 3mg, 2.5 years of MAT, and 2 years of dope prior.