My boy has adhd and unmedicated. I have gone down the homeopathy route, so defo have a read up on that. It has changed him. It's based on an energy for energy. Coffee calms him. In most it would give you a boost, but in the adhd brain it does the opposite. Bit like stimulant medication in a way.
In an organisation way. Get a notebook. Write down what needs doing. Then cross them off once done. Can always star the ones that have higher importance etc, so you don't miss deadlines. Also inform you work of your diagnosis as it falls under disability law, so they can make adjustments for you. Rather than seeing you miss deadlines they could ask what works best for you etc. if you assistants, don't feel you have to do it all, delegate.
At home, have a family meeting and delegate, so the load is shared and everyone has jobs, again do a list, cross it off, get into a routine, it will become second nature, before you know it.
Go for a walk, run, clears the mind and releases excess energy.
Keep a journal and before you go to bed, write it/draw it, just get it out, the 1000's of things going on and untangle them. You might find. You have answered a problem or an idea on a project you are working on, so have a quick skim read in the am when you wake. Do breathing exercises at bedtime, really makes a difference to switch off and have a peaceful sleep.
When in teams meetings. Get a fidget toy, just to release tension. So your brain is active doing something, so you can concentrate on the meeting at hand. Maybe record the meeting to play back to yourself, so you don't miss anything. Adhd ers think outside the box. So if it's strange to others, if it works for you, don't worry too much. So don't sweat, you might feel you are failing and stress about it, far too much which then affects everything else.
Lastly. Acknowledging that the things you struggle with is because you have ADHD and not because you are incapable. Be mindful of that.