My oldest did this around the same age and she grew out of it. It's always good to check with the pediatrician but sometimes it's just a phase.
Yes! My 18mo has been doing this for a month or so. At his 18m appt yesterday the Dr just said to monitor it. Can be 1 of 3 things.. 1. Completely normal as they realise they can actually do this 2. A tendon growth issue pulling up their heel which may need surgery 3. A neurological issue (sometimes associated with autism) But MOST likely completely normal!
Mine just recently started also! But I noticed its only when he is barefoot. He doesn’t do it often just random times throughout the day
Same with mine… has been doing it for the last couples of weeks.