First off, don't be alarmed about him not pooping for a month, if he's not really eating, he probably doesn't need to poop. Check his right side, do you feel a hard lump?
Could you post a picture of the frog and the enclosure? If you force fed him he is probably going through alot of stress right now, my advise would be leave him alone for the time being, if he doens't have a hard lump, stop the soaks and try to resume your normal feeding schedule without being too worried. Also, please create your own topic, more people will come and check new topics out, so your chances of being helped will be increased!