I have a question!! How should I manage M-shaped hair loss?

Lately, every time I look in the mirror, it feels like both sides of my forehead are getting wider, so I'm worried that I might be starting M-shaped hair loss. I didn't really care about it before, but the line looks much more prominent when I sweep my hair back or tie it up, so it's stressing me out. It doesn't seem severe yet, but I feel like I should start managing it proactively. I'm wondering if using hair loss shampoo helps, or if I should also be using supplements or scalp care products. Please let me know if there are any home care methods I can do before visiting a doctor, or if anyone has tips from seeing results!