u/Jumpy_Fold_7240

I bought this plant about 2 months ago. Forgot to Quarantine and now I'm treating all of my plants for thrips. I found out because there was larvae on the leaves and 1 adult spotted. I treated with Captain jacks One time one week ago. I also repotted her with fresh soil and some systemic granules. Keep in mind it's spring and I did this to ALL of my plants...Its now time for another treatment for all my plants. But now my philodendron has thin, yellowing leaves that were thick and dark 1 week ago.... I have it under 12 hour light through grow lights indoors as there are no windows with the rest and only water when the first inch is dry on the spoil.

Should I treat again? Is it too far gone? What should I do?