Just leave it be if it's in a pot. It will send the energy back to the bulb and the long flower stem will wilt. When it does just snip it off. The leaves will remain nice a green until they too wilt. If inside just water ever once in a while if brought in from outside I just put it in the basement no watering and cut back the leaves once they dried out. Come spring when warming up I took it outside and watered it and it would send up a flower bud on a stem. I had one bulb that I get from my Dad and it multiplied so many times I ended up with 4 big pots full over the years.
Hi Marge! Here are some great instructions for you. Good luck! Merry Christmas....