DDA Parshav Vihar: Possession Delays & Hidden Costs

Did a site visit to DDA Parshav Vihar last week, and honestly, I'm a bit confused. I work in real estate, I know the tricks, but DDA ke saath bhi itna mess? They promised possession by Q4 last year, but abhi tak kuch final nahi hai. I'm worried about unexpected total-cost increases, like extra charges and registration fees not clear initially. Mera budget pura hil gaya hai. Koi yahan se buy kiya hai? What was your possession-timeline? Did you face similar hidden costs? Is this normal for DDA projects? What did you do to push for quicker possession?