Keep them well fed.....they are hungry little critters and well hydrated.
Seems to be a prob. with sternfeldi babies.....they start dying off after a month or so. Feeding appropriate sized food is very important with them and having enough food for them.
I used just a plain ficus in their cage and had a patio mister on them set to a timer. 1st misting was around 8am set for 10mins. 2nd and 3rd at 12 and 2pm for 5mins. Last misting at 5pm for 10mins. Also misted with hand sprayer for about 1 min now and then.
I had sold them to another member at 3months age since I was losing my home....so dont know what happened to them.....but I had lost 3(within last 2 wks of me having them) of them by that age.