多くても1週間に2回くらいって英語でなんて言うの？

普段はあまり外食をしなくて、多い時でも週に2回くらい
普段はあまり～しない。not usually ~
多くても、せいぜい　at most, no more than,

I don't usually eat out, twice a week at most.
I don't usually eat out, no more than twice a week.