Girls, how quickly did you get back in shape after childbirth? I gave …

Girls, how quickly did you get back in shape after childbirth? I gave birth about a month ago, and already lost 10 kilos (gained around 13 during pregnancy), but I have problems with my waist, and overall with my tummy. No, I don't have stretch marks at all, which I am incredibly happy about, but my waist remains quite wide. Before pregnancy, my waist was about 62 cm, now it's 71 cm and it doesn't become smaller, I measure it for about 2 weeks, and it's always within 71-73 cm. My belly is soft, not as firm ? I eat the same way as before