Happy New Year, girls! I have such a question, already like maybe a mo…

Happy New Year, girls! I have such a question, already like maybe a month the baby doesn't poop on his own. I heard that it's normal even up to 7 days of constipation. But I still put in microlax drops, holding out for 3, 4 and even 5 days ? The baby doesn't fuss, he poops. The pediatrician said that with the addition of complementary food at 4-5 months everything will be fine, but until then, massage the tummy and keep track of their diet, but this doesn't help. We're 3 months old, we're breastfeeding. Have you encountered something similar, what did you do?