Yes, it is progress (and no, we don't sense it well.)

Once you have a session or two like that, clearing some data, you do need to rest. To continue to push will put you farther behind actually.

The good news is that once you have worked through even "smaller" traumas than what officially caused your PTSD, the brain learns how to file those types of memories and will continue to do so. This means you won't have to work through all of your negative memories! (The brain might use some dream-time to do this though, so don't be triggered by those negative dreams should you recall any.)