Hiccups as soon as I wake up, anyone else?

Frequent hiccups can be a sign of low magnesium or potassium. Try eating a banana every day for a week (if you can) or some pistachios or some other high K & Mg foods to see if that helps.

Rarely I will especially if I was startled awake or had to get up too fast

I don't get them when I wake up but its super easy for me to get them ! nobody else irl understands what I mean when I say they hurt. you're not alone !!