To be honest, I cannot offer advice to younger couples; it must be challenging for both parties in such relationships. However, I would suggest providing some form of support to your partner in his caregiving role. What I've noticed is that many women diagnosed with breast cancer worry about their families instead of focusing on themselves. I've had to work exceptionally hard to prioritize myself as well. I was the one taking care of everything.
We've been married for 35 years, and I expect both of us to support each other when needed. If I notice that my husband isn't fulfilling his responsibilities, I would communicate my concerns. Conversely, I'm making every effort not to become dependent. Despite not starting chemotherapy yet, having only undergone surgeries, I still manage a lot around the house. Perhaps discussing your expectations openly would benefit both of you. My husband also takes time away, which I encourage as it doesn't affect me. I value having my own space too. I'm 64, and he's 67. As we age, various health issues may arise, but it's crucial for us to support each other.
By the way, we can sometimes become toxic and argue over trivial matters. I try to avoid this as it drains our energy. However, this is the way I express my emotions. It must be hard to hide your fear and emotions when you need so much support. Honestly, not helping but just sharing a little bit of my situation. But I feel for you Brianna. You should not be dealing with additional pain and stress because of your relationship.