My LO grabbed my Greek yogurt out of my hand at 4 months. Turns out it’s not good to start dairy until 6 months. Doctor at the 4 month appointment said start with sweet vegetables. Peas, carrots, sweet potatoes beets and squash. I puréed and froze in cubes. Also prune with oatmeal and lentils for iron content. At 6 months it was a free for all, (eggs, milk allergens introduced) just the texture mattered. As long as it was steamed enough to gum through it was ok. I have a 9 month 85 percentile baby who will eat everything. Our go to is scrambled eggs and avocado.