By all means try stopping doing everything for him, but if that doesn't work, then please consider that there is more to this medically. You say the GP has stopped his anti-depressants: it doesn't seem to have made a difference, but does the doc know that? I don't want to upset you, but some forms of dementia can present like this because they affect 'executive function' e.g. Fronto-temporal dementia. It's worth checking. As it is, you are feeling miserable and perplexed by his behaviour. Presumably, he was not always like this. If so, something has gone wrong, and you need to find out what it is, for his sake and for yours. Thinking of you. 
By special request, let’s discuss our favourite Classic Music and why?
