Changes in character and eating habits

We are in the full throws of downsizing our belongings, de-cluttering and packing
whatever we are taking with us when we move to a 2 bed flat. He`s obsessed with
controlling the process of it all. I have to be careful about what goes in the bin as
he will demand that it stays even if the item is no longer needed or wanted.
It`s becoming increasingly difficult to tolerate his anger outbursts and accusations.
There is an ugly face to this dementia that has changed my loving partner into an
ever more complaining, OCD lead person, increasingly demanding and forever set
in his ways, controlling my every move, wanting to determine how things are to be
done, what I can say or do twenty four seven. It now often leaves me in tears as his
stubborn verbal combats take their toll. I long for some unity, agreeability and most
of all peace and harmony. But, I know that this is not forthcoming.
He`s losing his abilities to control his phone or manage some tasks on the computer,
repeatedly typing the wrong spellings, pressing the wrong buttons, making him more
irritable and angry as a result. He`s becoming agitated and frustrated with himself, too.
He`ll burst into verbal aggression against the phone or computer. Talking to himself
is another sign of his mental decline.
Trying to provide nourishing meals and drinks for both of us is also a struggle when
he often complains about taste and textures of meals. Whatever he used to love in
the past has now become intolerable to him. His taste buds are forever changing now,
making meal planning a nightmare scenario. I hate to waste food or money, but have
days when his dinner ends up in the bin for apparently little or no reason. It`s so very
frustrating. I wish there was a better way, but his behaviour will not let me find it.
End of June we have a doctors appointment where the result of a brain scan will be
revealed. I`m dreading the outcome already.