Hello Mining Green, I did not see your own message under the question after I send mine already.
If you run 16 in the tent and it is 12 outside now then you better wait till it is 14 outside! Otherwise she start to flower before the sunlight is reaching 14 hours light a day.
If you look at my previous answer the reveg will not harm your plant. So if you do not have an option it is ok to do so. But if you can prevent it you better wait till it reaches 14 hours light a day to be safe!