I carried my 2 reflux babes in a carrier/sling and found that was great. Doesn't have to be all day but defiantly after feeds and then they often get a good sleep too.
Infacol and probiotics helped ( dd was worse for 1st 3 days on probiotics then settled)
A lot of kids grow out of this by about 9mths old but some have it their whole life. But it does get easier once you find out what works.
Its hard seeing them so uncomfortable.