any advice on hospital bed mattress causing/contributing to migration and delirium

Hello community,

My father is at home and started with hospice about a month and a half ago. they immediately provided a hospital bed,which looks to be almost a hundred years old- like something out of an asylum. I only recently tried it out myself and it made me feel so sad and angry that my dad has been sleeping in it for over a month. they provided a topper that you plug in and it moves and is supposed to prevent bed sores- some sort of inflatable contraption. But when i lay down on that it felt horrible. My dad is incontinent now and late stage dementia.

the bed seemed to be causing delirium for him ( i see why now - it felt like a torture device when i tried to lie down in it ). Also, every night he is extremely restless and sometimes inverts himself or gets himself sideways in the bed.

i asked the hospice nurse to get rid of the topper. she did, but left nothing for him to prevent bed sores, and suggested nothing. The mattress itself is like one big lump/slab. So i have been frantically searching online for answers. I found a replacement mattress that is memory foam and has an edge to it that goes up 3 inches all around that is supposed to keep people with dementia from migrating around the bed. when he constantly moves to try and get comfortable and safe, he does not sleep, and my mom can't sleep. she is his primary caregiver. I wish hospice would take this more seriously, but they act like they have no funding and can only provide the cheapest of everything or - nothing. Does anyone have advice on mattresses/ solutions? The hospital bed mattress I'm looking at as a possible replacement for is called ProHeal Multi-Tiered Foam Hospital Raised-Rail Bed Mattress

thank you so much!