I'd be a little cautious on this, I took Fena off of it when I thought she was better (1 month) but she declined again within 4 days. I ended up keeping her on it for a total of 8 weeks plus a few days.
I also started giving her BRAGG Premium Nutritional Yeast Seasonings on top of her food which is filled with tons of B vitamins and in the end it really helped. She's running, jumping, grooming, etc.
So just watch your baby closely just in case and keep any of the remaining meds. xx