Congrats on Day 11! I can totally relate - I hit the lemonade wall too - only drank 3 glasses the past 2 days. I am ready for oj & fresh juice & like you, want to get back to my normal workout/exercise routine.
Sounds like you maybe should continue juicing & also maybe include more cleansing if you feel you need it. I recently bought Cleanse Smart to take with my juice starting tomorrow.