I do not think that either you or I have the expertise to make judgements about this. I think we may be in a dangerous situation. I know I would be expected to take my concerns to a doctor. You could return to your GP alone and discuss what happened and see whether you may be able to recover from this setback. If you think that the situation is irretrievable you could change GP 4.
Mealtimes are very traumatic.
There is no simple recipe about what should happen. You will need to have a problem-solving attitude to this. We always ask our adult patients how they would like people to help them with meals. This can be tried and evaluated later. It may be that there need to be adjustments to the help given and accepted over time when the effectiveness of the help can be judged.