Big John ate about half his breakfast an hour ago at 7am - then tested at 255 - his dose is supposed to be 6u - I am hesitant to give full dose since he was at 146 last evening at 6pm and I gave no shot. I have no other history on him. What should I do? He has been a grazer and free-fed before I got him just yesterday. I also posted in the N forum but was told to use the more active main forum for faster response. I am not new to feline diabetes but new to N insulin. Just adopted Big John yesterday and have no records/history yet. He is supposed to get 6u N twice a day, eats DM wet and mostly dry.