YOU SAID:

He he wee wee were week

INTO JAPANESE

彼はちょっと一週間でした

BACK INTO ENGLISH

he was just a week

INTO JAPANESE

彼はちょうど一週間でした

BACK INTO ENGLISH

he was just a week old

INTO JAPANESE

彼はまだ生後一週間でした

BACK INTO ENGLISH

he was only a week old

INTO JAPANESE

彼はまだ生後一週間でした

BACK INTO ENGLISH

he was only a week old