As per the value you have shared here He is in normal range. But of course there is 0.2 to0. 6 decrease in the value. Don't worry try to maintain a healthy food rich in greens, dates and liver and vegetables. And try to maintain a healthy lifestyle. There are other tests available to look for blood cancer
. You can Get Hb testedonce in 6 months if you are worried about the fall in the values. Healthy food and Healthy lifestyle make you a healthy individual.