Seeing more roaches 2 weeks after treatment- normal or concerning?

its been 2 weeks since pest control came to our apartment to spray pesticide (not sure what kind, but i can ask during his follow up).

He let us know that because we share walls with other apartments they will slowly come back in the next few months, unless he can treat the other units. It was just getting so bad we did it anyways just to have a break while we tried to find a new place.

We saw a decrease the first week, and made sure to put out our sticky traps for monitoring. Then starting a couple days ago... the sticky traps are filling up rapidly, and we're seeing roaches in places we never saw before like the living room and bathrooms. Adults and babies, more than we even saw prior to the treatment

I know its normal to see an increase around the first week but most sources I'm seeing say they should start dying off by week two...

Starting to feel defeated, so basically wondering if theres still any hope its working?