Ferritin and Iron Storage deficiency and eyelash loss?

I have found out that my Ferritin, Iron Storage, and vitamin D levels were way below average. Over the past 5 months my lashes have fallen out, but now that im taking iron supplements they have stopped shedding. My question is how long will it take for them to start growing back? I believe the shedding was telogen effluvium as my lashes would keep shedding but then grow back as lighter hairs. Please tell me they will go back to normal once my levels are back to normal!