What will happen if u keep eating the same diet but in a low amount which caused you the kidney stone will it make new stones or can it strengthens the existing stone?

I answered your question already. A small amount of certain food will become abundant if you eat that food repeatedly.

Diet is just one factor in stone formation and not its direct cause. Different kind of stones have different diet precautions. So have your Urologist adjust it if that is required. More important is drinking plenty of water. In the meantime eat a normal healthy diet Good luck