The best thing someone told me on here (I think his name is Build something or other) is that you needent worry about the keytosis thing, he said that there are all kinds of factors that can equate to no keytones apparently showing up on your keto sticks - like you're burning them all off so efficiently that they don't get chance to show - or that you've drunk a lot of water and they're so diluted that you don't register. I wouldn't fret too much about it - as long as you're losing the weight and inches then you're obviously doing everything right.
Good luck
xxxx