My partner (37m) is not providing support for my health issues.

Context: We are engaged and have been together for six years. We have a young child and own a home together. I’m currently in a highly stressful job that is causing me high blood pressure and frequent panic attacks. I feel like I’m on the verge of a breakdown. I'm finding it challenging to search for a new job that fits around childcare and my partner's ever-changing hours. I’ve reached a point where I feel I can't handle it anymore, and my partner is unwilling to support me if I choose to quit my job. I take care of household responsibilities, including cooking and cleaning. I prepare dinner for him every day. I’m not neglecting my own well-being or moping around the house, but the demands of my job are overwhelming me, and I'm genuinely concerned for my physical and mental health. I'm not sure what advice I’m seeking, but I’m struggling with the reality of marrying someone who seems to dismiss the commitment of “in sickness and in health.” I don't want to depend on him; I simply need some time to search for another job.