my preemie is 5 weeks old today, i am having to bottle feed of course but i am also breast feeding. hes still in the nicu but should be coming home this weekend, anyways with breast feeding i have to use a nipple shield because he is still to small to do well without it. i am really worried about nipple confusion when i plan to take him off the shield what are some good bottles that should help with this, and or any tips?