Hi,
I started out with williamsi in January with one male and two females,
and to my surprise I now have 7 young ones and another 14 (

) eggs waiting. I wasn't expecting success so soon, so I must be doing something right

. I hope there is something below that can help you get your little ones to survive.
My females don't bother with any of the convenient spots I set up and lay their eggs in places I can't touch. So I always have to wait until they hatch and then do a mad scramble to catch the babies. The first one lost his tail to one of the adults, and I suspect one got lost somehow (eaten ?) in the main tank. With that many eggs in hard to see places it is not easy to keep track.
For the hatchlings I have set up an Exo-Terra Nano enclosure with the matching canopy with a 5.0 CFL. This provides enough heat. The soil is first a base of white river sand (to fill the gaps between base and back cover, and hard to dig into) covered by loose soil. There is one big artificial plant with long leaves, and lots of branches and small vines. Most branches are pointing up, so that together with the leaves there are plenty of sunning spots and they can choose how close they want to sit to the lamp. The tank itself had lots of gaps here and there so I have attacked it with silicone kit and neoprene strips to make it escape-proof. So far so good.
I don't provide a drinking cup but mist twice a day making sure there are lots of drops on the leaves, branches and back cover. The hygrometer tells me it's 40% humidity, lower than my main tank. Not sure if that measurement is correct, but the soil stays damp and the drops after misting stay long enough so I think this is OK anyway. No problems with shedding observed.
My feeling is that the only thing a young must do is eat and grow, so I provide plenty of food. The soil is a habitat for springtails, and when I don't see a lot of them crawling around after misting I add a couple of spoons. My main food supply is vitamin or calcium dusted fruit flies, the smallest I can get. The newborns look at them a couple of days, but then seem to understand their purpose. I feed daily and make sure there are enough so the smallest ones get their share as well. It's cute how they all get into a starting position when I open the door.
On top of the food critters I have a small cup with gecko food powder from Zoo Med (for fruit eating gecko's, with vitamins), and a sort of protein and fruit jelly in small cups (that I don't know the brand of because I am down to my last cup and I peeled of the label). The adults like it, so I just give it to the babies as well and I regularly see them eat from both. When my first hatched I was looking at it every hour and was quite happy when I saw it lick at the jelly after a day.
Up till now I lost one hatchling, a couple of days after hatching. They were being cared for by someone else then so I don't have details on what happened.
My oldest is now 1.5 months, and my youngest 12 days. With 7 the tank is getting cramped, so I'll either move the biggest to yet another tank or back with mom(s) and dad.
Grtz,
Tony