How short is short? I have hair that is a bit above ear length and get it cut every 8 weeks or so (ideally 8 weeks but you know, stuff happens). I am getting a cut on Wednesday and it's been almost 3 months so my hair is now more of a bob - about jaw/chin length. Personally I wouldn't waste the money on getting a cut a 5 weeks, unless you think you are going to look terrible with just slightly longer hair.