Generally, if a succulent like Copper Spoons is getting too much water, the leaves will feel mushy. If the curled leaves are dry, the plant is probably not getting enough water.
Succulents need a lot of sun to thrive but too much hot afternoon sun, especially through a south facing window can scorch the plant or dry it too quickly. Make sure your plant gets a little shade in hot summer afternoons.
Copper spoons, as well as most succulents, should be planted in a mixture of potting soil and either perlite, pumice, or coconut coir. Water the plant over a sink. Allow water to saturate the pot and run out the bottom. Then let the plant dry out before you water it again.
Remove shriveled or ruined leaves. If it's just a little curl, it may plump back up with enough water.