“How to remove parental responsibility from father if he is unfit? What proof do I need as a now single mother? His parents are making this so hard and I don’t have any family myself to help with advice“

I am very sorry that you are in this situation. It must be very tough for you.
The process of removing parental responsibility depends on where you live. In most countries a parent can be deemed unfit when:
- They have been abusive or have neglected the child.
- They have a history of alcohol or drug abuse.
- They have a history of mental illness that makes them unable to take care of the child.
- Their living conditions are considering inappropriate for the child because they are dangerous or unsanitary.
If any of these points apply to the father of your child, you will need to collect evidence. Evidence may include text messages, voice notes, social media messages, medical records and witness’ testimonies. With this evidence, you can go to court to seek full custody of your child. Keep in mind that judges are usually very reluctant to deny contact between a parent and a child because it is considered that being cared for by both parents is beneficial for children.
My advice would be to contact a lawyer in the area you live, as they are best placed to advise you. I imagine that you must be going through a difficult time and things may get even more difficult if you go down this route. If you need support, please do not hesitate to get in touch with me. I am here to help.
Love,
Ana