Can't say on whether it would go on like this but crowd funding does exist and when you have a child involved it's bound to get attentionI'm sorry for what may be an incredibly insensitive question, but one can't help but wonder if this was in America or another country where healthcare was not free and insurance or payment was required, whether this would be continuing to the degree it is. Of course I'm not suggesting for a moment that this is a primary reason to end his support or continue with it, it just seems incredibly ungrateful to the experience and knowledge of the doctors and medical staff, but also the NHS who are currently practically on their knees. The amount of medical care given to this child will have cost hundreds upon hundreds of thousands. That in itself is not to say a life isn't worth it, but at what cost? The boy would never have any quality of life, i think it is futile to keep him going like this. If it were me, I would not wish to be kept alive under these circumstances and as I said in an earlier post, i wouldn't keep my dog alive.
The case of Jahi McMath may interest you too, from what I have gathered from some light reading is that the child was declared braindead in 2013 but then legal challenges were mounted by the family and the second death certificate was issued for 2018. She didn't spend all that time at the same hospital though