If she's in obvious discomfort, I'd be tempted to quit as well, wait a month or so (to let it all get out of her system) and then start over again. I'm sooooooooooooooo hesitant on introducing anything with K - dh and my ped keep urging me on, but I just know how awful the pain was for her in the beginning and I'm terrified to go back to that. Right now, she's just getting a teeny bit of eczema on her face, but it's not bothering her, so I'm good with where we are. It really is your decision, and it sounds like gradual is best. Do you think you did too much too soon? could you maybe pull back and just do yogurt for a wee bit, then hidden milk, then custard etc, but on a slower pace than this go around?