Hi Veronica,
Problems with sleep seem common, empathise with you as your mum is missing out on having some enjoyment in life. Side effects of some meds make you sleepy ? have a look at the leaflet in her meds boxes. Depression can also make you tired out and feel like going into hibernation check this with her g.p? also parky is tiring in itself and every moment is potentially exhausting. All sleep problems have a negative impact on quality of life see if your medical team can help or try the helpline on this site x