Oh man, same here as you. Applied on 28th May. Biometrics is done, still waiting on IME. Lots of people did medicals later and got visas, we followed IRCC's recommendation to wait for IME and are now stuck.
I am in the same boat as you. Called several hospitals a few days ago but to no avail. I didn't know that we could get an upfront medical examination done. Now, I have applied under the non-SDS category.