Exhausted from constant reminding - tips needed

My partner has ADHD and I find I am constantly reminding him things he needs to do or follow up. He does remember some things but it's so varied and random there is no way of telling what he will and won't remember to do. 

I find it really exhausting as I end up keeping every task in my head and monitoring progress, even if he's said he'll take something on and lead. I can't seem to get the balance of trying to get some equality in life admin, and also not burning out from the management that takes. It feels less anxiety provoking to take it all on but that's not the answer.

It's just not working as is. I'm utterly burnt out. We are going to try a weekly meeting to look at tasks, which is his idea. I have concerns that I will end up doing all of the thinking, planning and doing within this, but I'm going to give it a try with an open mind. 

Do any of you have any tips for strategies that help someone with ADHD be organised and contributing, and ways i can communicate better for it to resonate and be remembered so I'm not continuously managing every task? 

I have two kids, 3 and 7, eldest is autistic. So I am already managing and prompting a lot of people, while trying to stay on top of my own life too. I don't have any spare capacity to give. I am resentful and low, at the impact this has on how much energy I have left for things like the kids and career. My head is fried. 

Any advice much appreciated.