Returning to work after maternity leave? 😢

I was working with a job part time during my pregnancy but they had come to really like me and offered me a full time position after I had the baby. They gave me 6 weeks unpaid leave and after I had the baby I went to an interview for the full time position and was later told that it would be mine with a pay upgrade and everything. Perfect, everything I need right now!! But my daughter is 6 weeks, she’s exclusively breast fed and i’m seriously having anxiety about leaving her. I planned on having my mom take care of her while I worked all week and I bought a manual pump to test the waters and she will take bottles but i’m no where near able to pump enough for her. I’m nervous i’m worried and i’m waiting on my insurance to get me an electric pump, I know I need to get back to work but I do not feel ready at all, How do I deal with this? Was anyone else’s experience with returning to work as bad as it seems? I feel like this is the hardest decision of my life to leave her. Please give me advice please let me know its not that bad?! 😭