The fruits have started to pale and the leaves to curl. I'm pretty new to citrus.
Edit: Thanks to everyone! I'm going to try to make a couple of changes based on your suggestions.
The fruit size looks right. Sudachi are very small. I do think I might be overwatering and it might be getting too much sun. I think I will try moving it to an area on the periphery of the sprinkler where it gets a little more shade. Also do a soil test once I can grab a test kit.