Has anyone used this to help baby’s constipation?

Yesterday at my little guys one month check up I was telling the doctor how for awhile he only goes once every day or two, it’s the same consistency and color, he just doesn’t go often. He doesn’t scream, get red faced or seem like he’s pushing really hard when he does poo, he just makes a face and thats it. The doctor recommended Karo Syrup and had the nurse give me a sheet with the instructions.

On the sheet it said to use the dark Karo Syrup and add one teaspoon for every ounce in his bottle twice a day. He also said once it starts helping then after a couple days to just slowly cut back the amount I’m adding to his bottle then be done.

Now the sheet didn’t say anything about how long it takes to kick in so I was googling it to see if I could find an average amount of time. In all the search results I read each one had a different amount that needed to be added to the bottle. Most of them had different times and half said they were told to never use the dark and only use the light syrup. And a few said to never add to formula or milk, just have baby drink it mixed with water.

So I’m curious if you used it how much did you use, how often and which kind? How long did it take to work? Did it actually help? What did you mix it with?