"Work as instructed, and file later"
Unfortunately for you, you cannot file anything in your situation. As a cover driver for 8 months without your own route, you aren't entitled to 9.5 protection. The new contract would grant it to anyone with over 4 years of FT driving. You're a few months away from that.
196 stops needs to take you 10 hours, no less. Take your full lunch in one block everyday, and do it to where your lunch will conclude during evening rush hour when everyone is trying to get home, that will slow you down for a good bit.
20 stops an hour AT BEST is a good, steady pace for you as a new driver (especially a mostly resi route) , it'll keep management off your back for a while.
Now, 20 an hour is a stop every 3 minutes. So, when you really want to stick them, hold to that and sheet a package no sooner than 3 minutes apart. I don't care if one is apartment b and one is apartment c. 3 minutes between them. You can leave each package in the truck and walk back out to make it so that you aren't stealing time.
Slow down, follow all the methods, and be VERY safe, that's the most they can ask for