We focus on introducing the 3 allergens peanut, egg, and milk, which make up 80% of all childhood food allergies one at a time, and then introduce the remaining top 6 allergens all together when your baby is consistently eating solids.
You can be assured it is safe to do so as the amount of protein added for each allergen is very small. This also follows the same typical guidance doctors may provide such as using "mixed nut butters" to introduce tree nut allergens even though it contains many types of nuts.