Britt!....The strips are my nemesis! I started out nice and dark, which made me feel great, and I too slowly got lighter and lighter. Sometimes I did not register at all.
Keep these things in mind. You may be very well hydrated, which will lighten your sticks A LOT. Your body may also be VERY efficient (yay) and does not need to expel as many ketones.
If you are following the program, and do not feel hungry all(not just some, lol) of the time, you are in ketosis.
You are doing an incredible job! Do as I say and not as I do
( i love those darn sticks) and throw them out!!!!