DH and I are planning a day out with a couple of stops. We want to get the train to Wimbledon, get off there for a bit, then get the District Line to Victoria, then later get the Victoria line to Vauxhall to pick up the mainline train home. Should I get a return ticket to Vauxhall and just get off the inbound train at Wimbledon then use contactless for the tube? Or is there a better way to do it?