"We've watched a lot from overseas to see what they've gone through," he said.
"I've talked to a couple of European clubs around November, and we've actually been pretty good," he said.
The players tested twice a week, and they regularly use their apps to make sure their health and wellbeing were good.
"It becomes a part of your day, and it's probably your discipline afterwards when you want to go and do a bit of shopping or go with your partner or wife to have a coffee, and you have to get a takeaway and go for a walk down the beach or whatever.
"It's not major things, it's just the little things and we keep talking about it and making sure we can be as professional as we can. We've adapted," he said.
Like all the Super squads, the Crusaders are waiting to see if they will go into a bubble in Queenstown for the first part of the season.
Robertson said there were more updates than Telethon, and it had reached the point where he was no longer seeking information from chief executive Colin Mansbridge. He would wait until there was something firm in the decision.
All options had been canvassed, and they were planning for next week to adapt to what was required.
If it is necessary to go into a bubble in Queenstown for four to five weeks, it would be tough for the All Blacks who joined the Crusaders on Wednesday after their off-season, especially after the extended time they had away in the second half of 2021.
Robertson said he had discussed that with the players, but it was only for a short period by comparison to last year, and they were only a short flight away from home if they needed to leave the bubble.
Risk reduction was also a factor. Players needed to make responsible choices, he said.
Robertson said while Covid issues were in the backs of their minds, they had a good mindset around whatever might happen.
"In some ways it is quite exciting. It is a little daunting but it is something new which we thrive on," he said.
Argentina import Pablo Matera had fitted in well.
"He's got a great mindset for training, an 'awesome' pro. His English is good, so he picks up things quickly, and his comprehension is incredible.
"He's played in England, and international football, and I'm impressed by how much of a professional he is. He's taken the loose forwards under his wing and his learning is both ways," he said.