Janie, Chris would get random hiccups all the time. Sometimes just a single one, sometimes a run of them, but he would hiccup at some point most days from around when his breathing began to decline.
I always felt they were like diaphragm fasciculations ...
I'm similar to Tillie. Get them multiple times per day. Especially when eating or drinking. Sometimes only one hiccup......sometimes more. Thinking diaphragm spasm. Will likely not report as a symptom as don't feel like fighting with doc about if I really get them or not.