The lost branches will not regrow, however, it sounds like you may not have it in enough light. Norfolks can take full sun, indoors or out. I'm in the Southern part of Texas, just North of Houston, and mine take full sun every day of the year. Make sure that the soil is moist, not soaked and boggy, don't let it sit in water, and also don't let it go bone dry. It will be happy, happy, it sounds like it just needs more light. Norfolks 'can' survive in low-light environments, they're just not at all happy to do so. These are seriously tropical conifers, genetically predisposed to enjoying warm summer days full of light and humidity... Best of luck to you!
