I’m currently taking tirzepatide 2.5 mg and scheduled to increase to 5 mg tomorrow, but it’s making me very fatigued and I’m unsure I can continue. I’m considering switching to retatrutide. I have about 15–20 lbs left to reach my goal weight. For context, I work out 4–5 days a week, walk about 5 miles daily, and stay consistent with protein, water, and electrolytes. I’m also interested in GHK-Cu, MOTS-C, NAD+, and KPV, and plan to start GHK-Cu in a couple of weeks. If I stay on tirzepatide, could NAD+ help with the fatigue? If I switch to retatrutide, should I skip a week after my last tirzepatide dose before starting it?