Totally fine! Some people do it gradually and some go striaght in! My LB is 1 next week and i have already been giving him it in his food where i can, planning to introduce it as a small drink with his lunch next week and then start gradually with his bottles until my current(and last) formula tin runs out xx
It’s absolutely fine! I’ve been transitioning mine since 10.5 months in a couple of ways (cereal, mixing formula & cows milk) incase it took a while for her to get used to it. If your little one has taken straight away that’s brilliant!xx