From what I recall, eating yogurt or taking over-the-counter acidophilus capsules can help with thrush. When I was going thru RT, the hospital gave me some recipes for smoothies. I still have a few a week and I will often add yogurt to it. Perhaps it will be easier to drink a smoothie as you can make it thinner and add things that won't burn your mouth or upset your stomach. One of my doctors had suggested olive oil to sooth my mouth.