Watering your palm plant only a few times a week is okay. Overwatering a plant can cause root rot, which can damage the plant. It is important to let the soil dry out a bit before rehydration so that it can catch up with the moisture in the air.
The watering frequency will depend on factors such as the size of the pot, the type of soil, and the amount of sunlight and humidity the plant receives. Generally, palms prefer to be kept slightly moist but not soggy. It's best to check the soil regularly and water when the top inch of soil feels dry to the touch.