| he's 6 and no ones had him do it himself? i was diganosed when i was six and doing my own needles while i was in the hospital!
like Liz said, tell him straight out. it's the only way to do it and then slowly get him to start doing it himself. start getting him to test himself by getting him to poke his own finger and reward him with the usual "good job! you're so brave" kinda thing. then when it gives a result have him look at it and explain to him what it means. so if it's a high number, be like "look, your meter says that your blood sugar is 19. do you know what that means? okay well it's like a game, we're trying to have your blood sugar at 14(obviously you want it lower than that but dont make it look like he's waaay off). wanna see if we can get it to 14 by your next test?" so yeah turn it into like a game kinda so when you're explaining it, it won't be such an overload and then explain to him how you can work to get his bloodsugar down to 14.
i figure that would be an easy way. i dont remember what they did with me.  | 
