YOU SAID:

I go without feeding my fish for 3 days but he can survive for 2 weeks

INTO JAPANESE

私は3日間魚を食べずに行くが、彼は2週間生き残ることができる

BACK INTO ENGLISH

I go without eating fish for three days but he can survive for two weeks

INTO JAPANESE

私は3日間魚を食べずに行くが、彼は2週間生き残ることができる

BACK INTO ENGLISH

I go without eating fish for three days but he can survive for two weeks