Good luck and keep us posted.
Your 4 year old will be fine. I had two refluxers, my second and third babies. My poor first child really had to give up a lot, and both girls got very little of mommy for the first 6 months of Myles’ life. But, they really are fine, very happy, and they adore their brother. Very small amts of time make a big difference, so even if you can only spend a few minutes here and and a few minutes there doing something with him, it will make a big difference in how he feels.
I hoipe your appt goes well on Thursday.