question about pruning dormant red currant
I'm attempting to grow an espaliered red currant along a fence in my garden - it arrived as a dormant, bare root plant and I placed it in what I think is a good spot with good growing conditions for currants.
My question is about pruning this first year. The plant came with 3 main upright stems. Is it okay to choose the strongest looking one and prune away the other two? Again, it is dormant right now so my thinking is that this will not hurt it and will allow it to concentrate all of it's energy on growing that main stem, which will eventually reach the top of the fence (only 3 feet), where I will then prune the top and hope that it forces 2 side branches that I can train along the top of the fence.
Just don't know if I should leave those other two stems or not while the plant is getting established..
Any tips or thoughts? I have found a lot of information on how to prune espaliers but most of it is for fruit trees which already have a main trunk and are not a shrub like the currant.
Thanks so much!