When do you start feeling like yourself again?

I’m a first time mom and my son is 6 days old today. I think we’ve been doing great, he is such a sweet happy baby for the most part and he’s been doing great for how old he is. But I just feel off. I’m sure it’s a lot of just hormones from having him and the lack of sleep, but I miss feeling like myself. I am always so worried about him and/or want to snuggle and be there with him 24/7, I keep forgetting to do basic hygiene for myself. My bf has been reminding me I need to eat, go to the bathroom, I’ve gone days in between brushing my hair or literally anything. Especially with eating I kind of worry about myself bc I’m breastfeeding so I need to eat but I’ll forget constantly, I only eat once or twice a day and it’s because my bf makes me. Is this normal? I don’t feel like myself anymore I just feel like I’m here to be with my baby and I don’t exist for any other reason anymore.