Bloomy, I'm sorry I'm so late to the party! I don't know how I missed this thread. First, congratulations on getting the job, even though you're not feeling like it's what you're supposed to be doing.
May I please offer up another perspective? Your client is severely disabled. It sounds like he is stuck in his tiny apartment, with no stimulation. That means you are his world. Anything he does, anything he experiences during the time that you're with him, is controlled by you. For those hours, you determine the quality of his life. To me, this seems like a huge responsibility!
What can you do to make his life a little bit better? More colorful? More engaging? Could you play music? Sing to him? Read to him from your favourite book? Perhaps tell him about the beautiful things you see on your hikes. Can you find ways to show him that you see him as a fellow human being and not just a patient?
Good luck with it, dear bloomy. For your sake and his, I hope you begin to find meaning in this work. :hug: