Hi and welcome to the GERD forum.
I would not rush to level the bed, as you may continue to have this issue....and it is possible it is not dairy itself but possibly other foods...with pizza it can be the sauce as it is acidic.
You may enjoy more foods and bevs which may be a source of the problem and until you avoid them or cut back...all the meds you take may be in vain.
Keep a journal of what you eat and how you feel....even stress can trigger a flare up of these symptoms.
I had chronic cough, mucus in my throat, couldn't sleep when lying down. I found out I had silent reflux through Dr. Jamie Koufman's book. I changed my diet according to this book. Followed it to the letter and my symptoms disappeared in 4 weeks. I know depending on the severety of symptoms a combination of diet and medication is necessary. This book changed my life. I had gone from specialist to specialist and no one could figure out what was wrong. I found a Dr. Oz show online with Jamie Koufman being featured in it for silent reflux and did more research. Basically late night eating, carbonated soda, too much acid in your diet, fatty meals trigger it. If you look for her online you will find a lot of useful information that I am certain will help you recover.