I land Pearson 3:43pm tomorrow (Jazz flight from another Ontario city) and I have a flight to LGA at 5:15pm. I need to update my nexus file with new H1B visa.

(a) do I have time to do this between flights? (I don't have an appointment)

(b) where exactly (be as specific as possible, I am directionally challenged!) is the nexus office at Pearson?

thank you!!