So I may sound stupid for this, but I honestly don't know. We've been doing purées for about a month now and I've been introducing new food and staying on that food for 3 days before trying a new one. For example we just did avocado and that was all he had for 3 days. I'm sure that's a bit boring. Am I allowed to give him foods he's already had with the new foods? Say banana for breakfast then the new food for lunch and dinner or does it have to be one food for the whole 3 days to rule out allergies. Please help ha. I'm a FTM and just am unsure. Thank you!