advice? ideas? fussy baby

Long story short I have a 6 month old who has Acid reflux he is on medication for it but lately(past couple months) he won't sleep at night he's up every couple hours for an hour or two I've tried feeding him more cereal during day I've tried not giving naps I've tried baths before bed... I'm running out of ideas and being one tired mommy for work and school so any advice tips anything would. Be great thanks