Milestone session can be done at any age, as your child grows and starts to learn new things. The most popular age is 6-7 months when your baby is just starting to sit but not crawling. They are just happy that they can finally sit and see the world from that position!
But the biggest milestone is 12 months, you have made it! Through the sleepless nights, teething and all the other fun stuff in between, this is often celebrated with a cake smash, where everyone gets messy and has a lot of fun! Be sure to book this one in!