Tell your friends you are scared to be alone. I remember my first chemo. My husband there when I had it. Sister in afternoon but husband worked late, I felt weird and scared, and even though I have older boys I wouldn't tell them that. I was really frightened and ended up ringing him to come home.
I told my sister though, she is more friend than sister and she spent so much time with me. She wanted to. She felt helpless and it at least gave her a job. She dragged me out for cuppas. She took me for bloods. We went to pool in safe time.
Friends, true friends want to help. Please tell them. Their decision or offer is due to the love for you. It's not forever. Just for now.