Graeme came through his comeback well, helping Glasgow to a bonus point 30-14 success against Llanelli Scarlets at Hughenden.
The Test centre, who had been bothered by a groin condition for most of the season, is refusing to set his sights on a Scotland comeback in the build up to the World Cup.
He said: "It is a case of taking one step at a time but I don't think I will be part of the Six Nations plans this season."