Soil looks dry, I believe that's the problem. Water when top inch or two of soil gets dry.
Not enough sun, leave them outside, all day and nite. They also love cold nites. Give them as much sun as you can. Move to indirect sun when they start to bloom for flowers to last longer.
In zone 10, crocus' should of been planted in late fall, I believe.
Bulbs usually arrive in nurseries at planting time.
I'm in zone 8. My crocus' bloomed last month. So I kind of doubt yours will even come up, this year. Since they are usually the first thing to bloom in spring, and need cool temps.