Happy Thanksgiving! I used to have a decent number of trichopilias. Definitely don’t need two waterings a week this time of year, unless you were growing in large bark, stones, etc. As long as there is light moisture still near roots then you don’t need more watering. If you had very strong light but still very cool, maybe … more than once a week or if you have the very dry air that dries the sphag out quickly, then if the moss is getting dry then you would want it to stay at least slightly damp before you watered again