When it comes to making baby oatmeal in a bottle, there are a few things you need to keep in mind. First and foremost, you'll want to make sure that the oatmeal is finely ground so that your baby can easily digest it. You'll also want to cook the oatmeal ahead of time so that it's nice and soft - this will make it easier for your baby to eat. Finally, be sure to add some water or milk to the oatmeal so that it has a thin consistency - this will help your baby drink it from the bottle more easily.
Once you have all of these things ready, simply add the desired amount of oatmeal to the bottle and then top it off with either water or milk. Be sure to screw on the lid tightly and then give the bottle a good shake so that everything is mixed together well. You may need to add more liquid depending on how thick or thin you want the final product to be. And that's all there is to it! Your baby can now enjoy a healthy and nutritious meal on-the-go.