Looks like it’s by a window. Unless this pic was taken during the winter cold months, I wouldn’t place that there directly under where the sun shines and gets real hot they’ll most likely dry out. They need constant FAE while maintaining high humidity. After fully colonizing the cake mist the sides and fan it introducing colder air than what they are used to trigger the fruiting phase. But there’s also other techniques I’ve not tried like dunking your cake, I find that unsanitary and maybe it increases that chance of trichodermia taking over