It will take a bit of restraining and persistence, since they are at this age when you are starting. Wrap them up in a rag (except for the head), nice and tight, like a burrito. They will balk at the eyedropper/syringe (I would use an eyedropper, as sometimes a syringe will stick and then suddenly release) at first, but they'll eventually realize that hard thing is giving them some yummy food.
You may be able to teach them to take it from a dish. I never was able to get them to do it. :roll: But others have.
After a few days, you can start trying soaking some regular kitchen oatmeal (old fashioned, not quick oats) in formula or straight goat's milk, and seeing if they will take it.