Extremely depressed right now and December should be the most happiest time. Ever since my son was born my mental health…

Extremely depressed right now and December should be the most happiest time. Ever since my son was born my mental health has been terrible. I don't prefer to see a therapist or have medication but what are some others way to keep myself healthy while I'm struggling with my sons health?? I can't eat or sleep. My friends and family are very concerned about me but idk what to do. Any advice?

Thanks!