I managed to sort Dad out though he was unhappy that I as usual was taking over (getting feisty again!)
Poor Ajay, every which way it seems you face a confrontation with him, even though you have his best interests at heart.He's not going to like this one jot (the idea of placement in a residential home) and will fight me every step of the way
The consultant's advice is given with wider experience of dementia than yours, and without the emotional 'baggage' which we are all hampered by when it comes to making these decisions for our loved ones.
Yes, logically the 'social care in his own home' seems the better option, IF he will accept carers coming & going as frequently as his needs require. But that seems to me to be a very big IF. He is not in an 'accepting' frame of mind.
Dementia often robs a sufferer of their logic & powers of reasoning, and their ability to understand the overall situation.
His understanding and attitude of denial is not likely to improve and nor is his ability to look after himself.
These facts are not your fault, beware of the Guilt-monster getting to you.
You are trying to do your best in circumstances where even your best will not be an ideal answer.
Do not punish yourself about it; that will only hinder your ability to think clearly.
Best wishes