Not normal, but 100% understandable. You have to regulate the emotions of 2 other people, you have no space left to even feel your own nevermind regulate them, no wonder you feel numb! It's admirable that you're supporting your partner, it's what we do as partners but you HAVE to find time to prioritise yourself. You can only carry on like this for so long. It's not fair for you to live like this, you deserve a quality of life and it doesn't sound like you have one. Is your partner getting any outside support for his ADHD? If not it sounds like he really should be. How is he with lone parenting, would you be able to go out for an hour or two now and then to do something for yourself?
Not normal but understandable. I’d probably feel much the same if I was in your position. Your feelings are very much valid and need to be addressed. Do you have anyone you can turn to talk to about this? Perhaps someone who can look after little one (such as your partner if he’s ok with lone parenting), or a family member/friend? A little time for self care is much needed.
I am the ADHD partner. The adult should learn some personal regulation technics or things he can do for himself to calm even if partially. The child, well, they’re going to need help. There’s no way around that one. I wish I had had help at young age, instead my mom just filled me with whatever pills the doctors said. I’m sorry you can’t find a way to express your own emotions. What could he do on his side to help you? Since you help him regulate himself. It should be a give and take, fairness, not just a one sided you help me, now shush about yourself sorta thing.