Hi, Iv had this cat palm for around 8-9 weeks and it’s slowly been dying ever since I got it. The leaves are turning black/brown on the tips and drying up. Also the stems at the base are slowly 1 by 1 rotting and they just pull out with a mouldy smell. I don’t know what to do! Iv reported about 4-5 weeks ago with a brand new pot and Iv been spraying with a neem oil mixture. Someone advise please!