It’s totally normal for infants below 3 months to poop once in 3-7 days. Breastfed infants don’t face issues with constipation. It happens mostly with formula fed infants. Whatever it is, it’s very common and easily treatable.
My baby was mostly breastfed and used to be formula fed once in 2-3 days. She was a colic baby and colic used to get worse when she does not pass her stools for more than a day.
Home remedy we used was dipping a betel leaf with castor oil and placing it on her stomach.
Castor oil is known for its cooling properties and used to relieve stomach pain. You can find it turning black in sometime.
Ok now that’s a remedy just for the stomach pain.
For constipation my doc suggested us to dip the stalk of the betel leaf with castor oil and dipping it into the anus. This was a good remedy and within hours she used to pass out her stools.
You can try Elcarim drops which is completely herbal daily to avoid colic. Elcarim drops is reviewed on the blog.
P.S: Always heat the castor oil and use. Just 30 seconds heating in the microwave will do.
Hope this helps!!!