Good day. My daughter is 1 year and 4 months old, we're still in breas…

Good day. My daughter is 1 year and 4 months old, we're still in breastfeeding. I don't want to give her formula milk. I'm 10 weeks pregnant. Is it harmful for the baby? The pregnancy is going well, no complications. How did you stop breastfeeding easily? How did you handle this? Is it too early for kindergarten, or is it normal.