Super-flyweight Edwards (12-1-KO5) can claim a top 15 WBA ranking with victory over Nelson in Newcastle on Saturday – live on Sky Sports – and has been preparing alongside brother Sunny and reigning world champion Artem Dalakian.
Edwards said: “It was hard at first to take ourselves away and strip back every home comfort. It’s a bit like a prison training camp there but we’re boxers and we need a brutal mentality.
Charlie Edwards dominates Angel Moreno as Joshua Buatsi stops Liam Conroy
Charlie Edwards wants to settle long-standing feud with Kal Yafai
Where to watch British boxing this weekend - televised shows on March 22 & 23