I am midst divorce, 2 children - age 9 and 16. Hoping the nine year old will be with me maybe 9 nights out of 14. Her big sister so far has been 'making it up as she goes along' - splitting her time between her father's house and mine. It's actually worked out at probably 80 percent of the time with me as I am home more and he works longer hours. She feels torn and doesn't want to make any formal commitments to set days in each house but my solicitor thinks the fluid approach is putting more pressure on her having to make choices all the time rather than less. I also think it would help her father know what days with her he has so he can make plans. Any advice?