Wow, 6 weeks....
Yes, minimize the amount of toys. If there are too many toys, then the dog doesn't realize that he is only allowed to chew a couple of items. With too many toys the dog will think everything is fair game for chewing.
Anytime the dog is chewing something other than a toy, just say no (calmly but shortly) and place a toy right in front of his mouth and urge him to chew it. When he does, use a very pleasant tone and say good. It takes a lot of work, but this is effective. Basically, you need to have a toy within your reach at all times.
But at 6 weeks, the dog really isn't capable of learning not to chew inappropriate things. So you have to supervise this dog at all times (you are doing that anyways for housebreaking, right?) Left unsupervised, the dog will chew anything it can find, which not only can be costly to you, but also dangerous to the dog.
Are you crate training? You might want to consider it if you aren't. One way to make sure the pup isn't chewing (or peeing on) the carpet while you are sleeping or busy is to crate him. Just make sure you aren't leaving a 6 week pup crated too long at a time. He shouldn't bve in a crate for more than a couple hours at a time (he needs attention, and also needs to pee alot at 6 wks).
Tom C