Parents who have children with ADHD .... please look?

My 5 year old (6 in May) was diagnosed with ADHD and was on Concerta, focaline, and now straterra 2x a day... He also has chronic sleep apnea (getting tonsils/adnoids out on the 19th) The research I did says that apnea can mirror ADHD! My son has good and not so good days...but I am hoping his surgery may bring him better sleep and hoping for no ADHD so we can balme it on sleep spnea