How is everyone handling new born with other small children???

I’m having a hard time multi tasking. So far my baby is 3 weeks old today and my hubby has been able to stay home with me. So he has been able to help a ton and Sunday he goes back to night shift and I will be taking boys to school. I hate to get my new born out early in the morning she is still so tiny. She is almost 6 pounds now and colicky. It’s been hard for me all the hormones and having a c-section. I’ve been doing better mentally but man just thinking about doing everything on my own has me scared. I no I can do it but maybe I’ve been spoiled to much. Oh and if anyone asks y can’t they just ride the bus I live on a dead end and they would have to walk to a bus stop and I don’t feel safe with my little one walking out there honestly I don’t even feel safe with my 10 year old walking out there either. If it was in view where I could watch them I would but it’s just to far and our butt hole neighbors leave there mean dog loose sometimes.