It seems that I've also done a few things to try and get my juvenile Pacman to eat.
I learned how to make various sorts of cricket corrals out of pieces of plastic. Cutting a section from a plastic gallon water jug, or cutting the bottom out of a pint container results in a temporary barrier that I can insert into my enclosure to keep a cricket very close to the frog. This greatly increases the chances of a strike whilst the cricket has dust on it.
Feed one at a time. It irritates the frog to have a cricket climb on them. Feed one at a time and there's only one thing for the frogs little brain to focus on.
Cricket trap. If I find the frog just won't eat, I put a 16oz water bottle with the top cut off, inverted, and inserted back into the bottom. Placed carefully, a cricket walking around the enclosure will eventually end up here for redusting or replacement to the cricket box.
My juvenile went from eating every day to eating on his own schedule and usually skipping days, sometimes many days.
Now, I almost always offer him food, he'll eat when he wants.
My frog will alert on prey much of the time, but it may take quite some time for him to strike at it.