Possession done, but NRI investment feels trickier.

Is it really that complicated for NRIs to buy property here without being physically present? I just got possession of my 2BHK in Sector 65 from Godrej last month, and honestly, even being here, the process was a maze. Now my cousin, who’s an NRI, wants to invest in a 3BHK, maybe around Golf Course Extension Road or even near the upcoming Global City on Dwarka Expressway. He's eyeing projects by M3M or Sobha, budget around ₹2.5-3 Cr. He won't be able to visit often. What's the actual ground reality for managing the purchase and then rental, especially if he's not physically here? Are the advertised rental yields around 3-4% even achievable for a 3BHK in those areas? Any first-hand experiences on this?