I am having a very hard day. after being seen by my lactation consultant with hopes of weaning ruby from the nipple shield everything feels like it just fell apart. Ruby is only weighing 6.8 lbs at almost 6 weeks old (birth weight 7lbs). which is not good. even though she latched well (without the nipple shield) she suspects that she has a posterior tongue tie. she gave me a few options including bottle feeding with breast milk and a nursing suppliment system with a tube to feed into her mouth while she's on the breast. I feel like i have totally failed my baby and I am so upset. I really don't know where to go from here. whether it is better to just bottle feed her or if I should try the tubes. I'm so confused and very upset. I wanted so badly to nurse successfully.