Coconut oil enema or DIY suppositories should help ease your constipation to some extent. This is because coconut oil can lubricate your colon walls, making your poop easier to slip out. But this method may not provide a thorough cleansing of colon. Some stools may still get stuck somewhere in your colon if coconut oil cannot reach them.
That said, besides putting DIY coconut oil suppositories or injecting coconut oil enema up your bottom, you should ingest coconut oil to help with constipation as well. This can relieve your constipation more effectively as coconut oil helps to soften the stool on its entry into the intestines.