@jstewart084 – Hello and welcome! This is a challenging issue. Getting levels checked would be a good start. If your labs look good, but you are still feeling fatigue at specific times of day, this short piece from Northwestern Medicine might be of interest:
https://www.nm.org/healthbeat/healthy-tips/quick-dose-why-do-i-feel-tired-mid-afternoon
If you are still struggling, a visit with our primary care doc might be helpful to rule out any other issues (sleep apnea, side effects from other meds, etc.).