I should also mention that it is in a south facing window and I water it she the soil is dry. In past months this has been two sometimes three times a week but more recently once a week

A leaf tip death like this can be a symptom of malnutrition. Do you have a feeling that the new leafs grow to stay smaller than the original leafs? If yes, its calcium deficiency. I have the privilege of owning an expert who's prone to doing just what you have on your hands. But from what I see in the picture, it's actually doing fine again.

None of the new leaves have been growing long enough for me to compare their size. Glad to hear it's back on track. What would you do to treat a calcium deficiency and where should I go from here? Trim the leaves keep them on?

Thanks a lot for your advise Amnaa

Looks like water stress to me... and/or the beginning of dormancy.

|t should definitely rest now (especially if you do keep it in a place with lower temperature). It needs a bit less watering. Weigh the pot in your hand when it's watered and water the plant only when you notice the pot is a lot lighter. You should feed it with a nice fertilizer that includes calcium and boron at the beginning of spring. Don't worry about the leaves. The damage won't spread further and if the plant thinks they need to go, it'll take care of them.