Never had that, not supposed to happen. Maybe it is what you asked for, that gives the fatigue (processing emotions, healing, subconscious reprogramming, cutting cords…protection can also take some energy if what you’re fighting against is already hooked on you, or is unrelenting in attacking you).
So, ask for different things. Ask them to energize you and balance and align everything energetically (this can also give you tiredness).
If all fails, ask them to stop all work on you and go recharge, rest, energize and grow. And you do the same (charge yourself with energies).
Hope it helps. Also, have enough nutrients, hydration, rest, etc.