Attention Mums of babies with acid reflux - feeding schedule

HT
hey ya ladies,,,, my baby is 5 months now and since he was 4 weeks he has acid reflux initially he was on gaviscon now moved onto zantac,,,, he has never been a good feeder babies of my babies age eats about 6 to 7 oz makes me so upet the max my baby has ever drunk is 4oz and majority of time he has thrown up after that,,,, he just takes 18 oz a day and the day he takes 20 oz i fill up with joy today he just had 14 oz 😓 just wondering if its my baby who is doing this or other babies with acid reflux also does the same? please share ur experiences and the ways i can increase his apetite i swear its getting really hard day by day