Long term capital gain on sale of property ...

Hi,

I have a long term capital gain of 30 lacs after indexation and the total sale consideration is 1.9 cr. (Sale date June 1, 2024)

I have already purchased a under-construction flat worth 2 cr on April 10, 2024 and the possession date is December 31, 2027.

How early can I sell this new flat and also get the tax benefit claimed earlier while purchasing this new flat.