My Kentia Palm bought 6 weeks ago has started developing some yellow stems with leaves darkening and somewhat drying and contracting (see images below). It started on a small bunch of stems a few weeks ago and I thought that I had solve the issue by cutting that part but larger stems/leaves are now impacted and it seems to be worsening. I water once a week usually until it drips a little bit through (maybe between one cup and one pint of water max). The plant is below a velux SE facing and 4m from a south facing window. The house temperature is usually set at 22C (we like it cosy). Humidity in the house is around 35%.
I want to understand whether I need to water less or more. I can't get a clear answer from my quick Google search.
Thanks in advance, Matt