More light. The more, the better indoors. Right in front of your sunniest southerly facing window would be ideal (assuming you're in the northern hemisphere). Outdoor sun is fundamentally harsher, and to be avoided after a plant has been in low light for a while. You risk the death of your plant if you park it in outdoor (direct) overhead sun at this time of year. To be able to handle outdoor sun, your plant would need a period of gradual stepwise accommodation over weeks starting in bright (outdoor) shade.
