Small vent regarding the feelings accumulated ever since my dad has been diagnosed

This is my first post here. My dad has started having symptoms of ALS 2-3 years ago, but he was disgnosed pretty late, about 1 year ago. This post is just me venting out to a community of people who directly or indirectly share the same feelings. First of all, I am sorry for everyone who has ALS.

My dad has been slowly losing various functions. He got weak, cannot use his feet right and can barely walk. He is the strongest person I know yet i see him struggle when I come home (i’m working in another city and i’m visiting every weekend). Seeing him struggle with everything and becoming increasingly frustrated gives me a plethora of feelings that i cannot still fully accept and deal with. I end up burying them.