Hello everyone) The color of the stool changed to dark green for three…

Hello everyone) The color of the stool changed to dark green for three days now. I thought about teeth, but we're still too early. I wrote to the pediatrician and said to give Simethicone and Normobact. But according to the instructions, children under 2 years old cannot be used. What can I give the child now? Has anyone had this happen?!