GR Regent Park: Is its resale market actually liquid?

₹1.6 Cr for my 3BHK in GR Regent Park felt like a solid investment initially. But the actual rental yield is just abysmal, honestly. I was banking on at least 4% post-tax, but with the steep maintenance and current market rents, I'm barely scraping 2.8%. It's so frustrating when the builder's projections were way off. From my experience, this significantly impacts capital appreciation potential too. I've seen this pattern before where high initial pricing eats into future gains. What's the resale market actually like for GR Regent Park? Is there decent liquidity? I'm already thinking about my exit strategy in 3-4 years, and this low yield makes me nervous. Anyone else facing this? What are your actual numbers?