"There's no pain. It's good. It's the lungs more than anything that are going to be the tricky one but that's what the next couple of weeks are about. Before I play, I need to make sure I can do the job fitness wise. I am very happy with where I am at. I just need to make sure I do what we need to from now on.''
There is still plenty of time left in the Super Rugby season, not to mention the heavy diet of international rugby as well with the three-test tour by Ireland, new Rugby Championship (New Zealand, South Africa, Australia and Argentina) and end-of-year tour of the UK and Italy.
McCaw wants to make sure his foot is right before he takes any chances and the Crusaders, as much as they would like the All Blacks skipper back as they look to climb the Super Rugby table, have good loose forward depth with Kieran Read, Matt Todd and George and Luke Whitelock.
McCaw said he was coping spending time on the sidelines and it's likely to freshen him up after such a draining couple of years.
"I'm not frustrated,'' McCaw said. "I realise this is going to take a while and it's all progressing along as I would like. Sure, I would love to be out playing but I need to make sure when the foot says it's right to play, I play. You don't want to come back half-cocked with this team. You want to be ready to go. The boys are obviously keen for a big one this week because the Stormers are a big challenge. We will get out there when we are ready.''