my 6 months old baby girl refuses to drink formula, I tried different kind of formulas , but still she doesn't want to drink it. we just started giving her solid foods, she wakes up every 2 to 3 hours at night to breastfeed, I'm sure she stays hungry that is why she wakes up at nights, please help me, I don't know what to do , i even tried mixing breast milk with formula , but didn't work, please help !