Ketostix and all urinalysis strips measure acetoacetate, which is but one of the three ketone bodies you produce, and certainly not the predominant one, beta hydroxybutyrate (BOHB). The only way to measure BOHB is via a blood test, and there is at least one glucose meter that has this capacity, although the test strips are ridiculously expensive, I believe in the range of $3 to $5, and I have yet to see them available for $3.
This is what ketone body production during fasting / starvation looks like :
As I mentioned as a reply to someone else, ketogenic diets resemble late stage starvation, so we're talking day 3 onwards in the graph above. If, for whatever reason, your metabolism doesn't produce a whole lot of acetoacetate, but a raft of BOHB, your Ketostix will show you as not being in ketosis, even though you most definitely are.
There is no magic to ketogenic diets, despite what a lot of proponents of them may lead you to believe. They tend to aid with appetite control, which leads to involuntary caloric restriction, and weight loss. They also cause you to shed water weight, which is illusory, albeit gratifying, weight loss. If you do not have problems with appetite or caloric restriction, then there is no need for you to undergo ketosis.
If you are determined to be in a ketogenic state, then I would recommend that you take in 4 grams of fat for every gram of protein. Moreover, you should make sure to include as much coconut oil as you can tolerate in your diet, due to the large proportion of medium chain triglycerides (MCTs) it contains. MCTs metabolise differently from other triglycerides. They do not require bile for assimilation and enter the blood stream directly bound to albumin, much like endogenously produced FFAs do. They go directly into oxidation and therefore ketone production.