I have had this ponytail palm for a couple of years now. It has done very well up until about a month ago. Full leaves started turning brown until eventually almost all leaves have fallen off the “sprouts”. I had never repotted it, so I did so in hoping for improvement. He stays in a bright window with indirect sunlight. A couple of new little leaves have come through but I haven’t seen much change in them, they seem very lifeless. 1. Is this a watering issue? I water a little every few weeks and mist most days out of the week. 2. Is my pot too wide for the size of the trunk? 3. What do I need to do to save him?