How long will CPS be on my case?

I recently had my 3 month old daughter removed from my home from CPS due to post partum depression and a meth relapse, I since then have passed every drug test, gotten a job, gone to all my appointments and reached the 4 week time limit CPS gave me as to when she can come home. She is staying with my aunt for now. They told me I have to go to the services theyre providing through referral which is Terros and Family Preservation, but the 4 week time limit came and went and they now say I have to wait another week or 2. I need to know how long this is going to continue and how long until my case is closed with them? Any ideas, advice, or similar stories to give me any help or hope?