I was trying to remember a word, but I got tired of it so I'm taking a break for a while.
「飽きてしまったので、しばらくの間休みます。」は英語で「I got tired of it, so I'm taking a break.」という表現が良いと思います。
飽きるーTo get tired of・To lose interest in
しばらくの間ーFor a short while・For the time being
休むーTo take a break・To stop doing something for a time
アメリカ合衆国 
