You are either in ketosis or not in ketosis - any ketones showing on the stick means that you are in ketosis. The stronger the colour the more ketones are present - that tends to indicate that you are dehydrated. I know that you said that ou drink plenty of water - perhaps ou need more than some other people? I personally have 6 to 7 litres spread throughout the day as I like my water! I drink it fizzy though - couldn't drink that much plain water...