https://parenting.stackexchange.com/questions/4366/giving-a-baby-a-bottle-while-in-a-car-seat-of-a-moving-vehicle-should-this-be
driving - Giving a baby a bottle while in a car seat of a moving ...
Feb 19, 2012 ... I don't think it is 'bad practice' - it's just easier, more relaxing, and generally better to do it while stationary.