YOU SAID:
Diego went to the bathroom in the morning for a while
INTO JAPANESE
ディエゴはしばらく朝にトイレに行きました
BACK INTO ENGLISH
Diego went to the bathroom for a while in the morning
INTO JAPANESE
ディエゴは朝しばらくトイレに行きました
BACK INTO ENGLISH
Diego went to the bathroom for a while in the morning
That didn't even make that much sense in English.