Hey there, BlueHawk55.
Only if you have your OS on a separate partition. If this is the case you should be able to use cloning/migration software to clone only the OS associated partitions over to the SSD. However, If you have everything on single 3TB partition, I'm afraid that you won't be able to clone just the OS.
Perhaps a clean OS installation would be a better option. Don't forget to disconnect all drives except the SSD during the OS installation process if you decide to go with that suggestion.
Hope that helps. Please let me know if you have any questions whatsoever.
Boogieman_WD