I've taken in this orphaned ZZ plant from the office but it has since slumped entirely over, started turning brown and dry leaves. It was wonderfully healthy beforeIbefore. did water it slightly in the past but since have not watered at all for weeks and it now looks like it is Browning with leaves drying up. I'm not so sure it is still adjusting anymore, and I think I am killing it. I changed the soil 2 days ago but it continues down this slumpy brown dry path. It is getting sun away from South facing Windows. Thank you!