Stressful times

Hi my mum has terminal lung cancer she was diagnosed just before last Xmas she’s very sick now needing lots more care it’s been recommended that she now has an ACP care plan put in place but my brother disagrees he’s been her main carer he’s always lived with mum has no family of his own he’s done so well but he’s very tired I just feel like we are always bickering between us it’s so stressful does anyone know what this care package involves? TIA X