Urine Ketone levels are NOT a correct measurement of a Ketogenic phase. There are two states the body usually hits: Ketonurea and Ketoanemia, Ketones in the urine and Ketones in the blood, respectively.
Ketoanemia comes first; meaning that you will have ketones in the blood but not necessarily in the Urine. Unless you have a Blood-ketone meter, you will never truly know when you hit Ketosis.
Although I think you can use R-ala to get back into Ketosis – visit the AF Store. If you do use insulin, use conservative approaches of about 2IUs every 2hrs and measure your blood sugar every 30 minutes to make sure you’re not going Hypo. I would not recommend going under 60mg/dl in blood sugar levels. Don’t kill yourself over a diet, please be careful – in fact, just do the R-ala much easier.
Mr.X