Learning Lyrics ...nearly done it!

I started to relearn the lyrics of Aguas De Marco on August 9th, today is September 9th and I'm pretty much there. I still have to sing it through without a stumble, I have not managed that yet...though I am soooo nearly there. I have used several different methods. One from the great Alexander Technique teacher Suzanne Duncanson..holding a pencil between your teeth whilst you sing, gives renewed focus, for fairly obvious reasons of it being hard to sing! I keep trying to tell my brain that the lyrics are easy and enjoyable, that allows the words to flow, but then I sabotage it by thinking, I'm gonna muck up soon...and I do. Running out of breath plays another part in not flowing with the lyrics. I have been using a metronome at 107bpm...really slow for this song... it's painfully slow but I'm trying to summon the lyrics ahead whilst singing the current line. Trying to do that in an easy story of images and not panicing... doubt and panic and it all goes to crap!I'm speeding up the metronome and aiming for a complete unfluffed version later tonight! Now there's a challenge!