Is it time to water this orchid?

[Plants2295]

Hello Orchid Board,
Roberta made the very helpful suggestion that I weigh my phalaenopsis orchid and when it stops loosing as much weight that it might be time to water it. Well I have been obsessively weighing my orchid every day, and I'm going to list the weights below:

Orchid was watered 4/14
4/17: 321g
4/18: 309g lost 12
4/19: 302g lost 7
4/20: 296g lost 6
4/21: 290g lost 6
4/22: 287g lost 3

It has now been 8 days. I am starting to get antsy about watering it, as it seems like its about time for that. I also misted the top bark yesterday which might have changed the numbers. . . it's in mostly bark but with some moss as well. Do you think I should water it today?

[Roberta]

I think it's time... the rate of water loss has slowed (so there isn't much more water to lose by evaporation)

[Plants2295]

Thank you!