today i just went to take a look and i saw finally a thick brown/black poop on the surface,so i decided to bring him to the tank after total 13 days,i dropped food and he ate 6 pellets
thanks everyone for the support and help,the advises were totally worth,and the epsom salt force feeding while the fish in metronidazole bath were proven to be life saver,although he was on highly dosage of metro considered at severe cases which i gave 2 pills of 250mg per 10 gallon which is a bit of a risk
again thank u everyone!