Baby Blue Help! (with pics)

Hi Baby Blue is suffering. I had pruned the issue away and it has returned within two weeks. Not sure if Pest eating or fungus.. Any guidance appreciated.

Location: Victoria

https://preview.redd.it/4ho5ddlq4u2f1.jpg?width=3024&format=pjpg&auto=webp&s=338e8c6ab23b38f7d4c2dda2ef248096ce9a668d

https://preview.redd.it/2ld145aw4u2f1.jpg?width=3024&format=pjpg&auto=webp&s=488ff46dcb1a49fdfdc0fabbafbb3bf88f077431

https://preview.redd.it/di0m9czy4u2f1.jpg?width=3024&format=pjpg&auto=webp&s=4042b65e30abe74fb233dc06fecc7679a7e24b34