please help

my daughter and I have been doing great with nursing, she's 6mths old and a healthy baby. my problem is she refuses to nurse when awake, even when she's hungry she will fight it. we used to be able to lay down and nurse for about 5-10 minutes but now she will nurse for maybe 1-2minutes and then is done. so I have had to to play with, etc. she just seems to hate nursing when awake and would rather play and look around than eat. i feeling like I did something wrong to make her eat this way or maybe she's just one of those kids who doesn't like nursing she's definitely not a comfort nurser. do any other moms have little ones like this or advice to help get us back.