How can i Split the large image into small tiles based on zoom

You would be interested in software that do this process for you, like MapTiler, zoomify…

Of course you can also do it yourself, you just need to use image handling libraries to cut your image into tiles, zoom it down and repeat the process.

Or usually the reverse: zoom down your image until it fits a single tile, then zoom it down until it is twice as big as the previous step, cut into 4 tiles, etc.