The amount of vegetables (by which I think you mean plant-based food, since quite a few fruits seem to be included) is completely and totally irrelevant in a ketogenic diet. What’s relevant is the amount of carbohydrate in the plants you eat. Carrots are very, very different from cabbage in their effect on ketogenesis.
Also, “serving” is a pretty fungible term. I don’t know if there’s any official definition of what a “serving” of each food item is and, if so, whether you’re following them.
A quick google indicates that someone, somewhere, thinks a serving of broccoli (a relatively low-carb vegetable) is one cup. That’s unlikely to be universally accepted definition because most of the world doesn’t measure in cups, but let’s go with it. One cup of broccoli is about 4 net grams of carbohydrates. Six to ten servings would be 24 to 40 grams net. That’s beginning to push the outer limits of what most people would consider a ketogenic diet. If you’re eating other foods with carbohydrates (which it sounds like you are), or you’re eating other fruits and vegetables with a higher percentage of carbohydrates in them, you’re probably eating outside the range of what most people would consider to be ketogenic.
The only way to actually know is to test for ketones. But if have been pursuing your new diet for several months, and are not seeing any results then you might want to seriously consider eliminating a lot of the carbohydrate foods you’re still eating – and those would largely be the fruits and vegetables.