Answer: Now that you've moved it out of the draft from the air conditioner, all you need to do is wait until it puts out more healthy growth. When you're sure it's healthy you can go ahead and cut the stem to make it the height you want and then cut the top so there's only a few inches of stem below the leaves. You can root the top in water or moist potting soil. The extra length of stem can be cut into 3-4" pieces and rooted, as well.
Water your plant thoroughly and then let the top half-inch of soil dry out before watering again. Don't try to water on a schedule (such as once a week) because plants will use more or less water at different times of the year. Just touch the soil to see if it's dry, or pick the plant up - if it's light, the soil is dry and it should be watered; if the pot is heavy, it probably doesn't need watering.
Hope this answers all your question.
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