Help needed to care for Tolu. Jairak Rainbow

[Adella]

I recently purchased a Tolu. Jairak Rainbow at Canada Blooms.
This is my first orchid and I want this to flourish. Your help would be welcomed.
It is presently receives light from sunrise to sunset in the kitchen. The main window faces south.
I water it from below every 7-10 days.
Do you trim the stalk after blooming?
The plant has 2 other small fans of leaves in the 3 inch pot.
I would be grateful for any suggestions for the care of this plant.
Adella