The smallest of my litter didn't gain any weight the first week either all the others did. It seem like he wasn't getting enough all the others were getting it. He nursed but in most cases it was only a little. I tried to bottle feed and but he would only take a little but come to find out that was all he needed and his tummy was full. I also bought one of those bottles with milk in it. He does a lot better with that type of bottle because he doesn't have to break suction for the bottle to breath. Anyways good luck with your little one. |