So I got this money tree (Pachira aquatica) like four months ago. Since then it's lost over a dozen leaves (not leaflets) and it's grown over half a dozen new ones. The first of the new ones also fell off this week. The shed leaves are yellowish-brown.
When I remove all the dead leaves, it looks very healthy (or let's say aesthetic because I have no idea what a healthy plant looks like) but I'm worried that so much decay and growth is pretty stressful for the plant.
I keep it inside in a fairly dark room, right next to (not in front of) the window. I water it with a lot of water about every three weeks (the soil is usually still moist when I do that). The temperature is around 20 degrees Celsius and hard to adjust. I've moved it twice in those four months which might be part of the explanation why it's not doing well (It was next to the window first, then I moved it somewhere darker and then back when I thought it needed more light. Neither move seemed to change anything.
What do I need to pay attention to?