Complex sentence: In 1999 Khanna moved to New York City from Amritsar, to study at Fashion Institute of Technology, while studying full-time, she worked in restaurants in Manhattan to support herself and her education.
Split into simpler sentences: In 1999 Khanna moved to New York City from Amritsar, to study at Fashion Institute of Technology. While studying full-time, she worked in restaurants in Manhattan to support herself and her education.