It depends on what you want to get out of it. If you are scared of the canter, but kind of want to do it and see what it feels like, well, I'd say go for it. It isn't the be all and end all of the world. And your horse knows how to do it. Probalby he'll take good care of you. Initially, you will be focussed mostly on keeping your seat and going with the horse. So, being able to steer or affect your horse , or "train" your horse will not be really possible. But if you've been riding for a month or more, feel confident in sitting trot, I would say try it.
But, as the others said, you do have to master trot before you can become an effective rider at canter.