Does anyone have any advice on how to prevent hiccups in baby or at least get rid of them when they happen?

Changing feeding positions can help, along with burping the baby more often. Hiccups will usually stop if the child continues sucking or drinks a few sips of water. Hiccups are more common in the first 3 months of life, though they generally bother the parents more than they do the baby!
Hope this helps.