It's never a good idea to bring in a plant that has gotten used to outdoor lighting aka the sun.
First off, you have to lower the nutes, otherwise you'll get a nasty nute burn. Because the plant was used to metabolizing a large amount of nutes due to the large amount of light, now, with the same nutes, but less light, it will not handle them and may start to get burned. This may also be why your plant is drooping, it can't handle the nutes and is stocking them up, causing the leaves to become heavy... or it might just be overwatering.