My son is 4 days old and has lost 12.6% off his birth weight. His Dr. wants me to add formula. I want to breastfeed only. Yesterday was the first day that I have been able to express anything from them. I have no issues with him latching till last night when i introduced the formula. Dr said to nurse like i have been but offer him a bottle afterward. I don't wanna do a bottle in fear of nipple confusion so i'm using a small needle-less syringe 1cc to give tiny amounts. is this ok? or should i be using a bottle...?