u/International-Move76

Hello everyone, I’m fairly new to diying. I have a wood shed that was built on a concrete slab. The previous owner didn’t use pressure treated wood for the sill plate and fastened the 2x4's right to the concrete without a sill plate gasket. There was also about 3 inches of dirt against the back of the shed. Needless to say the sill plate 2x4's have rotted out. I'm trying repair it so that it lasts. My idea was to lift it and put 4x6x24 concrete patio blocks as a foundation with a sill plate gasket on top and then attach the pressure treated 2x4's to that. This will lift the shed 6 inches the wood on the back of the shed won't be buried in the dirt. Is this doable and a solid idea or is there any better options?