Good day, I have a problem with my child who hasn't pooped for 10 days…

Good day, I have a problem with my child who hasn't pooped for 10 days. He feels good otherwise, breastfeeds well and eats normally. We started using a candle made of glycerin on the 4th or 5th day. Yesterday, we put another one in as well...I don't even know what to do. Constipation has been present since 3 months old. Then he was fine, pooping regularly. Now he doesn't poop at all. I made a broth from black plums and gave it to him for two days now. I also give him green apple slices. I decided to add some black plums to oatmeal porridge cooked in water. Still, I don't know how to proceed