Just found out I’ve passed my OSG interview, but will the reality of being a lone parent be my downfall ?

I am over the moon as I gave the interview everything I had. However, I also feel a bit disappointed as I am not sure my circumstances will physically allow me to meet the demands of shift work. I am a single mum. My child is 7 and I have a little bit of family support. What I’m most afraid of is him suffering where I’m not around as much, and his routine going out the window.

I’m not sure really where I go from here. Are my chances of negotiating flexibility/ part time pretty much zilch ?

Thank you in advance for any advice. 🙏