Depending on how many you have to do you could hire a tile table saw from Bunnings or buy a wet bench tile saw the guide and extra support helps with thin cuts. I bought a cheap ozito wet tile table saw I find it good for thin stuff. J D E
It's great that you've received an excellent suggestion from @JDE. Hiring a tile table saw is the best way to go about cutting your tiles. My suggestion is to calculate the number of tiles you will need to cut. You just need to decide If cutting the tile with a new grinding wheel is more cost-effective but takes more time or hire the table saw and cut the tiles quickly but pay for the rental. I'll leave the decision up to you.
Please keep us updated with your progress, we would be keen to see your tiling project once it's finished.
If you need further assistance, please let us know.