Ketostix are unreliable. I got an inexpensive breathalyzer, much better indicator of ketone levels. Some use blood monitors, but I don’t puncture myself unless it is REALLY necessary.
If you eat enough fat, you will not feel hungry. Others have suggested some fat bombs additions to coffee, etc. If none of that works for you, just melt butter over the veggies or meats you are eating. It isn’t hard to get plenty of fats.
You might also want to try fasting, either the intermittent fasting protocol or extended fasts. It is surprisingly easy to get out of the habit for eating every few hrs. especially if you eat enough fat and protein.
And Bottonwillow didn’t say darker than spinach, just dark leaf lettuce, so that leaves out iceburg lettuce. Arugula, romaine, butterhead are all great. You can also use some kale or swiss chard in salads.
And in order for your body to utilize the iron in spinach, it needs to be heated above 160F, and that is cooked. Many carbs need this as well as the spinach. Steam the spinach with a pat of butter and see how that goes for you.
Good luck on our Journey. And remember we are all pretty different, this way of eating might now work for you as it does for others. You might find this helpful http://www.tuitnutrition.com/2016/01/dont-be-a-ketard1.html