Unhappy Choysia White Dazzler

I have a very unhappy looking White Dazzler. It has been planted in this spot for 3 years now and was established when planted. Was very happy until last year. I'm not sure what to do with it.
The one on the opposite side of the gates still very happy. Is it the honeysuckles stealing all it's water? Any help or advice greatly received.
I am a novice gardener so please be kind!

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I have 3 and 2 of them are unhappy where they are. Maybe it's the other shrubs around them them