Lilac Diesel Auto flower

this week I notice the small plant has a bit heat stress when I put it in growing tent with a 240w light around 90% ( bc another plant is in flowering stage ) and I think it's too much for a small plant ( you can see the leaf rolling up a bit ) so what I did is... move them to another light source, the white light 2 85watts, 1 135watts, shouldn't be heat stress, but will see later