Hi. I care for my dad who is 82, lives alone and recently diagnosed with vascular dementia. He's nosedived since diagnosis and we've recently had to go out at night a few times to pick him up when he's got lost. Hes not really capable of making decisions, i look after hus finances, medication, food shopping etc. He can make a drink and heat up a ready meal in the microwave but is starting to need reminding to do so. At what point is someone considered to be at risk?