Would love help starting a model around my husband

My husband has a VERY active mind and he comes to me with things that trigger him all throughout the day because he wants my support. I sometimes feel overwhelmed by all that I’m doing and tend to process things more internally or through my scholars work, and sometimes don’t want drop everything I’m doing to hold space for him. I’m also a coach so I’m doing this a lot with others. When I ask him if we can talk about it later or tell him I’m busy right now, he gets upset. He says things like “you only want to hear about things when they’re positive.” Which is really not the truth, I just can’t be his sound board all day long now that I have my own business and committing to my own goals. I’m not sure where to start with a model on this. Can you help?

Thank you!