How do you get a baby to take a formula they don't like the taste of?!

Jessica

I'm needing to switch my daughter from Gerber Soy to the Gerber Extensive HA (hypoallergenic) due to milk sensitivity. However, she HATES the taste of it. I have to mix it with the soy. I do two oz of the HA and then an oz of soy or she won't take it. God only knows why, I think it tastes and smells a lot better than the soy milk does, but babies are weird! I just want her belly to get better! We struggle everyday when it comes time for her to eat. And have for 6 weeks. Doctors say reflux or the fact that she was born needing medicine to come off of the medicine I was on. My brother and sister had to be on goats milk and hypoallergenic formula. I did too. It runs in my family. Her new doctor told me if I wanted to try it, it couldn't hurt anything. My sister gave me three cans of the HA formula so I decided it was worth a try. I just don't know how to get her to take it. What's the proper way to switch formulas? I love her so much and I just want everything to be okay with her.