Continue to crank out pages, but discouraged over the quality. Three days ago, I wrote my best and most emotionally filled scene ever--rough draft junk but good. And then bang, the next day the rest wouldn't flow. Yesterday, with a head to desk moment, I realized that I wasn't done with the last scene and couldn't leave it yet. I backed up and came at the transition again and now patching in the stuff I wrote yesterday. My typical 1000 a day scrapped to about 500 each day... Hoping to get back in the flow tomorrow and make up the word count this weekend.
The rise and fall of emotions as I write never fails to amaze me. OTOH, in the midst of first draft, I also have no true judgement call on the quality--just the raw emotional impact. Keep writing. Keep writing. Keep writing.