I do this from time to time so I can lower my caffeine tolerance and I would say the main things I think help me are:

- having a glass of room temp water right when I wake up (just keep the water by your bedside)

- getting into the kitchen and making a glass of lemon water before eating anything

- eating sardines for breakfast

- drinking organic beef bone broth after sardines

Then I think the main thing is drinking a lot of water, doing a bit of cardio and hitting the sauna or steam room. If you can get a few lymphatic massages to keep everything moving. Also avoid sugar and breads because this will make your blood sugar spike, then crash badly and that’s when you feel you need the mid day coffee pick me up.