I have a 2 yr old Holstein I bought to use with my nurse cows and she seems to be loosing a lot of weight and not doing real well. Does not seem to eat as much as the other 5 nurse cows. I have a cider in her that I will pull out sun what kind of meds would you give her? I was going to give her a shot of multi min and b12 and some dracxell. Any advice to help get her back right?