Sorry if this comes off as patronizing, but maybe you just need a break? You had originally planned to be done w/ Ch.1 by Chirstmass, so if you were working these 2 months straight maybe you're just tired/bored and need to take a month off.I have been struggling with the writing on this next update. I don't know why.
Obviously everyone is differnt, but when I was writing my (shitty) chyoa I would set myself deadlines - "I have to finish these 20 chapters by the end of the week" - and by Friday I would have mostly lost interest and I was just forcing myself to finish instead of enjoying the writing. Taking 2-3 week off of porn would help get me motivated, and always when I came back and reread I would find that all of the later chapters I wrote were the worse ones.
Anyway, just my 2 cents.