Golo Is Locked In A Cave Help him to move out

Fill Bottle 7 . . . then use bottle 7 to fill bottle 5 . . Empty bottle 5 and put the remaining two litres from bottle 7 into bottle 5 . . Fill bottle 7 then use bottle 7 to fill bottle 5 . . empty bottle 5 . . Fill bottle 5 with the remaining 4 litres in bottle 7 . . fill bottle 7 and then use bottle 7 to fill bottle 5 . . this will leave you with 6 litres in bottle 7 . . Done