formula switching

Due to DD's CONSTANT spitting up we are switching from Similac Advance to Enfamil Gentlease...
I've been using the RTF Similac but the Gentlease is powder only...
so far DD has gotten 4 bottles of the Enfamil, and while her spitting up has reduced- she despises the new formula- not sure if it is a taste issue, a texture issue (too thin) or both...
so my question is: how long do you think it will take DD to get used to the new formula...
I know she'll eat eventually- she won't go ona hunger strike, will she?

Re: formula switching

I say try it for a few days. She has to get used to it.