Keep the keto going
Dude, I've done a couple of precontest keto diets and am in one right now. Are you using ketosticks? These only show the amount of ketones in your urine. If you are expending a lot of energy at work or other activities, or are doing a a lot of cardio, the ketosticks may not give an accurate representation of ketosis because of ketones being used by your body. A more accurate method would be a blood sampler. They are getting pretty cheap and easy, you can pick up a variety at most pharmacies.
Also, there are trace carbs in just about anything. With the diversity of how the human body functions from person to person, the carbs your counting and taking in may be preventing ketosis. I would recommend no carbs whatsoever for the first 36-48 hours after your carb phase. (I'm assuming a 5day/2day structure) Once you get into ketosis, there will be no doubt. After you get familiar with that feeling, you won't even need the ketosticks, you'll know. Get Duchaine's Bodyopus, he breaks it down in laymans terms. Someone else may have a better recommendation.
Also, after about a two week period, you're energy levels will be great and so will your training. If you're dragging ass, it's because you're not taking in enough protein/fat calories.