So I have a 4 month old Jackson that is still pretty small he is maybe 4 inches is that the size they should be at that age? I also am having a hard time feeding him cause he doesn't want to eat I have tried crickets, worms, and fruit flies. Any advise would be super helpful! I also forgot to mention he seems like he is getting heavier but still small and short. I got my other Jackson around 5 months and he was huge! So I am a little worried he is to small. Again any help would be awesome! Thanks!