I definitely say 'scale back', Laura. Exercising while on Induction is usually not fun. Are you taking a potassium supplement? Along with the water you've lose the past 10 days are electrolytes. A lack of potassium will make you feel weak and tired - at a muscular level. The Eades recommend 400mg a day which you can get from a supplement or from a product called "nuSalt" (1/8th teaspoon in a large glass of water will give you over 500 mg) Be sure you'll well hydrated when you take potassium. You should continue supplementing until you reach maintenance - on hot days and days you work out particularly hard you should take some then as well.

HTH
Nat