My husband tested 1.5 for the third time in a month. I cut the Soy south Beach breakfast bars out of his diet last week and upped his dose by 15% again. What are we doing wrong? Do sweet potatoes have vitamin K? He has been eating one of them 3 to 4 times a week and he stopped drinking and eating most sugar because he is pre -diabetic. He is now using sweet and low in everything. I am really getting worried he is walking around with a time bomb inside of him. His doctor called and left a message that he wants to see him asap and I will call at 8:30 and get the soonest appt. I can. But, what will he do besides raise his dose again? Rignt now he is doing 7.5 on Mon,Tues,Thurs,Sat. and Sun. and 10.5 on Wed. and Fri.