I went to a different pet store than the one I got Ruby at today. Their FBTs were larger than her, and my usual pet store does usually get their pets in at a younger age. I haven't noticed any growth of Ruby since I got her, and she looks a bit skinny to me compared to the larger ones I saw at the other pet store.
Do you think I should up her feeding to four crickets every three days until she looks more rounded out? Or should I supplement some of her meals with something more fattening, like a meal or wax worm? Or maybe just feed her crickets themselves with something higher in protein or fat - most of what they get is kitchen vegetable scraps.