Everyone telling me how to raise my child??

Lately I’ve been getting really frustrated, my baby is 1 month old and I feel like everyone is trying to tell me what to do and what not to do. I let my baby sleep on my bed during the day, because he sleeps for longer, but my partners mum and my mum keep trying to dictate where I should let my child sleep. And feeding and getting him to sleep my mum especially tries to tell me what to do (now I feel my mum has no right to do so as she’s had 6 children but only has 2 that live with her due to social services and my younger brothers aren’t really examples of well behaved children.) she told me to give him cool boiled water, which I read not to do, and saying I cuddle my baby too much, and demands that I don’t sleep with my baby because it’s not allowed. I don’t know if it’s because I’m a first time mum and just overreacting. I just feel like if I need advice I ask people on here or I will ask my granny.