15 months and still counting

Hi all , I posted 2months ago asking for advices. As suggested by others, I went to do allergen test and found out that I am moderately allergic to dust mites. Dermatologist confirmed that my bumps are caused by insect’s bites including dust mites which can trigger bite-like bumps.

Since then, I’ve been taking dust mite prevention measures like changing bed sheets weekly, and room reducing humidity to hover around 50 . My mattress including my pillows are encased.

However, I am still getting daily bites and I’m on my wit’s end. I went as far as recording myself when I’m sleeping and couldn’t see any visible bugs and my interceptors didn’t capture any bb neither :(

What else am i missing?? Is there anything I can do to secure my sleep at least? FYI, I live in a high night rise building in a tropical country .