Girls, hi! We're at 1.2 and I'm really worried that my daughter doesn'…

Girls, hi! We're at 1.2 and I'm really worried that my daughter doesn't walk on her own...we can stand independently, walk along the railing, dance near the railing or crawl while sitting, crawls faster than I walk, and when I force her to walk on her own, I put myself opposite her and she does it 3-4-5 steps, but then she doesn't go on her own, she lowers herself to all fours and crawls...I'm going crazy with her, she holds onto my hands but I already have a backache and soon something will come, how do we deal with this? How long should we wait?