Phie is same age. She is some times walking on her own but mostly with holding hands. We thought she would walk same as the boys- well before 1year but nope. She doesn't talk but babbles. Eats alot but was 9.8kg last week. At her 12month she was 8.4kg so i been kinda pushing eating. Phie was late getting teeth, so i have been making sure she's full when she stops eating, not just bored and snacks and milk.
I give our kids probiotcs to help with their tummys.
If she didn't like the food i think you'll find she will catch up fast, a month or 2. but a check up never hurt.

Sorry if it doesn't make sense, the barefoot princess is covering me with kisses