I'm fostering 4 6 week old babies. 3 are healthy. One is small and only weighs 1.09lbs. Thus has been happening for 1.5 weeks. Not always eating. Sometimes has diarrhea. He had an appt last week and they gave probiotics. But still no change. Today they gave more probiotics and 3 doses of dewormer. He drinks good. Sometimes have high energy with big appetite but his weight isn't catching up. I also give nutrical. Anyone experience stuff like this? Did dewormer help? How long till he goes back to being healthy?