I would follow Marlorena’s earlier advice above and prune hard after flowering this year, then keep all new growth after that to train and fan across the wires/trellis. Once-blooming ramblers are usually pruned lightly just once a year after flowering, although you can lop out any further dead or dying bits in winter/early spring.
Edited to say, that’s a fantastic job @AlliumPurpleSensation, a great example of how being ruthless pays dividends!
Mountainous Northern Catalunya, Spain. Hot summers, cold winters.
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Edited to say, that’s a fantastic job @AlliumPurpleSensation, a great example of how being ruthless pays dividends!