Girls please help me? Going back to work

Hi, me and my partner are going through it at the moment due to me and trust issues... he has moved out but we are still together and going to see someone for help... don’t know what will happen here but I also need decide if I wanna go back to work in January our baby is 6 months and the only person to watch her will be my mum for about 6 hours a day but my mum is saying enjoy your baby which makes me think she ain’t 100 percent even though she said she would. My partner earns 30 k so I won’t get help if we was together and I didn’t go back unless we was to break up.. my head is everywhere! Anyone in same situation? Anyone not go back to work or did any advise would be great ... my partner said I would have to go back to work if we stay together.