How long to stay on 5X5 routine?

[Gambit]

I've done it for 3 weeks now. When do I stop the routine or change it up?

 

[blackbeard]

as with any routine if it isnt working then you should change it up..
you should be making progress each week adding weight..after 3 weeks the weights should be challenging but you should still be getting your 5's

 

[Princess]

unless you really find it is not working for you, i'd stick with one routine for at least 6 weeks before changing.