Owen was diagnosed at 4m - he had it before then but they called it colic and I was none the wiser, then. I will share with you my experiences in hope that perhaps something will work for you too.
We use Alimentum and Dr Brown's bottles - this combo plus Zantac at 4m gave my son his smile back. Alimentum is one of those hydrolysed protein fromulas. It is also a bit thicker, which helps it stay down. The DB bottles, help with gas - we LOVE them and will use them for our next baby.
We elevated the mattress pretty high, about 6inches at first. This of course created a slide lol. So, I made a speed bump by rolling an adult sized blanket up really tight into a long log and securing it with tape. I placed this under the fitted mattress sheet at the level where Owen's feet rested - and taped it to the mattress there so it wouldn't move. It was kind of like a shelf lol. Anyhow, it kept him for sliding down!
We always feed, then keep upright for 30mins. When he was little, we used the bouncey seat and put him in front of baby einstein (which are 30mins long!). This was he was still and calm for 30mins and it helps reduce spit ups. We did tummy time 15mins before the next feeding, to try catch his tummy empty so he wouldn't spit up when on his tummy.
A swaddle, snug may help tons. Until the Zantac kicks in (usually 2 weeks to see the full effect - but it should get better along the way) I would help him sleep anyway he is comfy - honest. Swing, carseat - whatever he wants. After the meds kick in, you can undo anything you don't want. He needs to rest to heal, so help him do that anyway you can.
How often are you givng the Zantac. We started at once a day and ended at 3 times a day, then we has to switch to a PPI because he was at the highest dose of Zantac for his weight. But the Zantac was awesome! I hope it works well for your DS too.
As for Easy, when Owen's reflux flares up - he refuses to eat. We never really did small frequent meals. I think once the meds kick in you will find your baby may not need that frequency either. Can you show me what your Easy looks like at the moment? Maybe I can offer some advice about it?
Hope this helps some - HUGS,
Zoey
