If you’ve ever had the pleasure of trying to spoon-feed a toddler, you know that you have to dress appropriately - it’s going to be a mess. Something resembling a hazard suit might be the most appropriate, with plastic spread across the floor in all directions. Please do not attempt this without a water hose at the ready.
The effort itself doesn’t sound all that tough: put content on transfer mechanism, convey to recipient who then chews and digests it. That is the idea, at least, and some of that banana-carrot-mango-sauce might actually make into the baby’s mouth.