Write what you saw and heard, not what you concluded. "Declined breakfast, said she was not hungry, ate half a banana at 10:15" is evidence. "Being difficult about food again" is an opinion that will read badly in six months. If you need to record a concern, record the observation that caused it and then say you are concerned.
Avoid abbreviations only your team understands, and never write anything about a person you would not be comfortable reading to them. They, or their family, have a right to see it.