Looks pretty healthy to me.

Brown leaf tips can be a sign of low humidity, but also could relate to other culture problems. Having older leaves turning yellow from time to time is normal.

Frequency of watering per week is not a good measure of sufficiency (or overwatering). Make sure the pot isn't sitting in water and that the soil a few inches down isn't staying soggy between waterings. Too much water or fertilizer or too small a pot could be a problem. These palms like at least a bright location, preferably at least a few hours of sun a day (moving them suddenly into full sun could cause leaf burning).

Good luck.

you might also want to chime in the the houseplant forum .. and the palm forums ... if there is one ...

is that a very new leaf.. if so.. you might be over-watering ...

and the media in the pot behind.. looks awful peaty ... which further retains a lot of water ...

we dont do palms in MI ... but i see them in sand country ... and a peat media is just about the polar opposite of sand ...

so i suggest you look to your media also ...

ken