DS has a dairy allergy. Thank goodness DD does not. But she's about to turn 1 and while I am so ready to be done breastfeeding, I'm a little hesitant to put her on whole milk. The kids have separate sippy cups, but she loves to try and drink his and I'm a little worried about cross-contamination.

Fortunately DS just has digestional issues, nothing anaphylactic. But I still don't want to subject him to cross-contamination if I can help it.

How did you address one kid's allergies vs another?