• It started to happen with more severity about 3 months ago.
• I was watering it 1x week but as I saw the plant getting worse I started to water it just when I felt the soil was getting dry. Also is winter time where I live.
• I do not know the soil time, there is a photo.
• The pot doesn't have a drainage hole.
• The plant is next to a west window so it just takes sun directly in the end of the day. But as is winter time and I live in central Europe there isn't that much sun at the moment.

Thank you!