My two grandchildren, ages 5 and 8 still sometimes ask to be fed. I feed them a few bites and then they take over again. Mt grandaughter likes to put her little finger in my mouth as she did as a baby. And she likes sometimes to be rocked like when she was a baby. Her brother who is five likes to be held like a baby.
I think it's just a way of making the transition from being a baby to being a big girl and boy. They will outgrow the need if the need is met. If you're not comfortable to treat thema s a baby then make sure to spend time with them just to cuddle and reassure them that they are still your "baby."
I tell my grandkids that no matter how old they get they will be their mother's baby abd ny baby just as I was still my mother's baby at 55. My brothers were also my mother's babies.
It's OK to want to be treated as a baby but I want to reassure them that they don't have to be treated as a baby to still be loved as they were when they were babies.
My philosophy is to give children what they ask for in terms of comfort and reassurance whenever it's possible to do so but to then let them know that they are just as loved and cared for without the baby talk, eating, being helpless. I pick them up, give them hugs, ask if I can rock them to give them this warm sort of relationship and reassurance. I will feed them a few bites when they ask but suggest to them that I know they can feed themselves. Let me see you do it. When they do feed themselves, at the end of the meal I give them a big hug.
When my 8 yo granddaughter sskes to be fed I suggest that once she's thru feeking herself I'd like to hold her for a little bit. Often she's
forgotten wanting to be babyed by time she's thru eating.
I think that sometimes adults as well as babies and children equate love with being taken care of. If feeding them helps them to feel more loved I think it's a good thing to do. At the same time we don't want them to get stuck at the baby stage and so we encourage them to do the things they can do and give them love in the form of hugs and praise when they succeed.