We were lucky/unlucky make up your own minds.
My Dad had dementia and whilst never actually "losing" it he did become very confused, He had a fall down the stairs in his home at the end of March and could barely walk but he could communicate, though was very forgetful and would not always know where he was. It was hearbreaking.
In late June he had a stroke and went into hospital, he lost all ability to talk and he eventually caught the dreaded Covid and on 18th July he passed away. God it hurts. In the fall he fractured 11 ribs, cracked two vretabrae, had a brain bleed and fractured his pelvis.... the ambulance took over four hours to get to him, a quivering wreck, motionless and in severe pain at the bottom of the stairs. And he lives in Hampshire in the well to do South of England.
We had to agree to Dad getting a stronger dose of Morphine to "make him more comfortable, though we knew what that meant and within 12 hours he'd passed away. I felt that by agreeing to this I was complicit to murdering him. This is the nearest you will get to legalised assisted dying in the UK but believe me, watching him suffer and struggling to draw breath it was the kindest thing we could have done, he was unconscious for the last four days of his life.
God I miss him!
BTW OP my genuine heartfelt sympathy goes out to you and your family.... stay strong!