How to break these dog eating behavios?

It sounds like the dog is afraid of the water and food bowls or some plates you use? Some dogs get anxious around stainless steel or reflective surfaces. I have a dog that had that quirk. She got over it by putting the bowls on a mat (reduces sound because the bowl does not slide around which can cause some anxiety in some dogs) then I left it to her to eat. You could try getting a mat or a feeder bowl set (water and food bowls fit in holes for each and this is on a stand that is sturdy holding the bowls in place). You are feeding into your dogs fears and encouraging by doing the things you are doing. I know you mean to be helping your dog but you are not. Also, if you have consistent feeding times and you have done a few things that may make it easier for your dog to approach his bowls, put the food in it and sit away, at a table nearby but ignore the dog. Leave the food for 15 minutes and then pick it up and discard it (or store it separate from the dog food bag for the next meal) Feed twice a day, morning and evening and do not put food out in between those times. If you ignore the dog and pick up the food, he should get hungry enough after about the third missed meal, to want to eat his food. He may actually it it the first time. But it is not good for him to have all these requirements (hand feeding, one person feeding, people right beside him). Let him refuse his food, don't make a big deal out of it and act like nothing has happened. Each time you put the food down, make it pleasant "Here's your food- time to eat" or something said pleasantly. Put it down, move away from it. Don't look at the dog or be next to or too near the feeding area. If your dog doesn't eat and the food is picked up. Ignore him for about thirty minutes. No scolding or coaxing, just ignore and don't feed him after that until the next due feeding, and only the amount he would normally get for that portion.

There are also weighted bowls that keep bowls from sliding around.

I've never heard of anything like this, but, if I were in your position, I would go for a tough love approach.

Give him some really yummy food (maybe if he's scared of plates try a bowl?) and then just leave him to it. Don't indulge in his strange behavior. Have your mum put the food down (so he won't have any extra reason to be stressed out) and then don't stay there with him. Eventually, he'll get hungry enough to eat, I'm sure.