while on depletion and low carb
1. drink plenty of water
2. What ever carb source you take take it as complex carbs and take in lots of fibrous carbs (insoluble fibers) like green veggies.. these wont affect you by any means
3. Try peanut butter, extra vergin olive oil and fish oil.. and restrict nuts (cos nuts also contain considerable amount of carbs if you are so particular about carbs)
but personally i feel that you need not go that low for depletion.. if you workout really hard you can even do with 150g of carbs per day..
but just have a watch...
Are you preparing for some show?