Work around your schedule. Do your best to maintain communication, even if one of you gets busier than the other. If you are the busy one, warn your partner that you may have limited time, and try to send at least a quick email or text, or a share a brief phone call. If you are the not-as-busy person, take advantage of the time by picking up a new hobby, getting in shape, reading a new book, etc. Flexibility is very important.