I am struggling with our son (almost 3) right now as well. Since the warm weather hit, he is a bear when it comes to eating. Hardly any breakfast, pretty okay lunch, too busy for snacks (though I force it), dinner is the easiest. All of them are one cheek on the chair one off and ready to go back outside.
So, I am now trying to get some power packed stuff that is quick and easy, but it is frustrating. I am following him around the yard like a crazy person to get him to finish things. Not to mention my renditions of Bob the Builder machines to get him to finish my high cal concoctions!! (he loves when I do Dizzy and spin his cup)Man, does it get old some days. I am squeezing MCT oil on everything.
More than anything it just really messes with your mind. We just came from a clinic visit and they seem to think our last visit's weight jump was incorrect since he went back down to the curve he had been on before (between the 40-50%). Last time we were there they were amazed at the jump so they said back off the extra stuff...now I am to go back to what I was doing before! Arggh...suddenly I've gone from him looking chubby to him seeming thinner just because of a stupid clinic visit (all in my mind of course). I am going to let it go, do my best and try to accept it is just him being a toddler. With my older one I wouldn't have even batted an eyelash at this behavior but with CF it is so much a part of our mothering.
Just know you are not alone and you are still doing a great job even if she goes through normal toddler eating stuff. He will be 3 in 2 weeks and just recently lost his buddha belly if that makes you feel better...I know is just his body changing and lengthening but it still messes with ya'!