1week old with with excessive hiccups!

Nita
My son has hiccups aleast 5-7 times a day. At first I figured it was his nipples on his bottles so I changed it to "Newborn" from size 1  (Avent) but that didn't help. I also have grip water and patting his little back but nothing helps.  And his little body so small when he hiccups he scares himself lol. Anyone has this issue?