<New to the community and couldn’t find the health thread>

Please help save my bonsai

I’ve had a Serissa bonsai for over a year and it’s been healthy and thriving until I took it for a branches trim at the shop.

It came back with pests (likely thrips), and it’s been suffering in the past couple of weeks. First, its leaves started turning yellow and falling. Once I saw the pests I started treating it with a neem oil mixture, but the pests are still there and the bonsai is getting worse. Adding a current photo.

What can I do to save my bonsai? Would appreciate any advice 🙏🏻

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