Pacman frog not eating??

[Deku]

@ goreptiles: I don't want to risk any accidents, I will just let the feeding be done in the tank since I will replace the substrate once a month...

@ Deku: Thx! So you would recommend me to just leave it alone and not feed it? Will the pacman give out any hint that hes hungry and ready to eat?

Thank you for your input! Like I said before, this is the first frog that my gf and I own and I just want this experience to be in a positive note... more input is appreciated~

Yes and no. Yes you should leave it alone for a while. But no you shouldnt worry about it eating. NORMALLY frogs can stop eating without care. But I think pacman frogs are an exception; they will hold off eating for a while but it eventually will eat unless its seriously sick or it has an impacted stomach(gravel, sand, etc).
What I recommend you do is simply buy some tongs(ball pointed ones because the other ones pose a health hazard to them when they lounge) and offer it a live earthworm depending on the size of the frog. You can even offer it a roach or a favorite food of a pacman. Just avoid mice or any mammals at all cost. Offer the prey item twice a day every two days. Meaning every two days you offer the food twice UNTILL it starts to eat. Just make sure you stick to a routine schedule as to frogs follow that. Try getting the prey item to wriggle as much as possible. You can also shine a lamp onto the insect it may appeal to the frog(worth a try). What I do with my frogs and toad is I directly mist them before I feed them for 5mins. This will open up their appetite. Make sure you dont "squirt" it but more like mist it. Afterwards offer the item and it SHOULD eat it. If not give it more time itll come around. Aslong as the frog/toad isnt skinny then you're in business. Pacmans should NEVER be skinny. If so they are malnourished , ill and or dying. If you have a malnourished frog give it items that are higher in fat. I was told wax worms have a higher fat content. So that may work as well.

[Deku]

Also read a post up above yours it said plants eat waste of the frogs product. Here are some clarifications of that. It takes 2-3 days for the waste to be broken down into harmless soil by the plants. So if you have a lean mean pooping machine you may want to get more plants. As well as if your frog doesnt poop much you might want to have less plants or feed your plants on some other way. Remember not to use chemicals or pesticides though.

Also if your frog/toad is a burrower remember to keep the plants potted and in place with rocks to prevent any digging and demolition of your plants. Also if you go for plants you need to get a plant light. If not just buy a uvb/uva light that has a low wattage(40-50watts) it depends on the height by the way. Just make sure its not going to bother the frog/toad. Keep the light on for a photo period of 12 hours or so a day. This will stimulate the frogs behaviour and all. They sell light timers at some petstoresand hardware stores. Make it so the light turns on around 7 or 8am and turns offf around at most 9pm.