would your DH agree to something as an alternative? my DS didn't have formula but will often have a smoothie in the morning - i usually just use milk & a banana and i figure that is nice & filling & is good for him.

maybe even suggest to him that, as she's getting towards 3, that maybe he could help you look for an alternative? that you had heard x,y & z were good but weren't sure....maybe if it was 'his' idea (even if prompted by you ) he might feel like he's having some input?

fwiw, a cup with a straw (those take & toss sort but with a straw rather than a sippy top) has always been popular with DS & with the spill proof lid, not too messy! or even a 'special' cup that your DD can help you choose for before her naps.