You have a couple of options. 1. ask your retina surgeon 2. ask your glaucoma surgeon. Both should say yes. If either says no then you can post-pone a couple of months. Most of the glaucoma tests will not be affected by your surgery.
Not a doctor, but when it comes to eyes I wouldn’t wait. Your retinal specialist has no doubt monitored your IOP on follow up visits after the surgery, and keeping the upcoming specialist visit should be fine as long as he/she knows you’ve recently had ERM surgery.