No. Cutting a clone now is not a good idea. You should always take clones from vegging plants and keep them under the same light cycle as the mother plant was under. Taking a clone and changing the light schedule of it will pretty much guarantee your failure due to over-stressing the clone. This is before we get into the monster cropping you would be doing by re-vegging the plant. Just plan ahead for the next time. When you top your plants, clone them.