Walking

Alyssa.

So I have a one year old and she is not walking. She will walk along the couch or table pull her self up but wont walk on her own. She also uses her tip toes alot while walking along things or if you hold her hands to walk . She will stand flat foot but only flat when standing she will only stand alone for like 2 seconds and then sit down or grab something. Should i be worried or does it take time ?