That means he's laid up for 2 months, depending on what the rules are that year. So that's hard on the stallion going in and out of quarantine. One of the things they do is go on the race track and gallop. Like yesterday was a pretty nice day. She's in a perfect balance for that type of riding.
Every animal needs a break, anything in training.
But if I ask they should glide into that. But dressage horses are pretty disciplined actually. As the horse advances they feel your seat bones shift and that all becomes aids and he better listen to those aides. You need to give them the time to relax but be aware of what you're doing on their backs. I think that's really important especially for the advanced, highly trained animal.