The only reason to have an NPA done is to quantify your functions. In some cases, there will be therapies to strengthen weak functions. In other cases, it just adds a definition to what you already know.
Imputing Sunday instead of Monday does not mean a cognitive deficit.
A cheap way to check out neurocognitive functions is to have a ImPACT or similar test done. They are cheap. Some can even be done online. Most concussion clinics are set up to administer them.
https://www.impacttest.com/about/?The-ImPACT-Test-4
markneil,
Your sleep apnea can cause all of your memory symptoms.