i also looked into this question and didn't really find any evidence that eliminating triggers earlier was beneficial, but i am interested to hear if you find differently. my first 2 were intolerant to dairy, 2nd more extreme and for longer, but #3 hasn't shown symptoms of intolerance at 5 months. i haven't started solids yet, and will prob delay dairy, but i am not that worried bc the others showed symptoms from early early.