After finishing off the clay court campaign with a record-extending 12th French Open title, Nadal was unable to complete a third Roland Garros and Wimbledon double after being knocked out in the semi-finals by Federer.
Following his defeat, Nadal made no mention of his schedule going forward with Masters 1000 events in Montreal and Cincinnati before the US Open in late August.
But Nadal will be wary of overplaying after struggling with knee issues on hard courts over the last 18 months.
At last year’s US Open, Nadal was forced to withdraw from his semi-final against Juan Martin del Potro after the problems flared up and he then took the rest of the year off with abdominal and ankle issues.
Then March, Nadal pulled out of a semi-final against Federer in Indian Wells because of a knee problem and withdrew from the following week’s Miami Masters.
Nadal did come through the clay season injury-free but Spanish publication Marca say his goal is to “preserve the knees for the US Open.”
And he is then quoted as saying: “I do not know what my future calendar will be.”
But the 33-year-old said he will not approach his schedule with fear.
“With fear, I can not face things because I would not face them anymore,” he said.
“I cannot be playing tennis thinking about whether or not something can happen to me.
“When my rivals play a physical game, then if things happen, they happen and you have to remedy them.
“My calendar is adapting and changing to my needs at each moment more than having a totally planned thing.”
Rafael Nadal schedule
Rogers Cup – August 5-11
Cincinnati Masters – August 11-18
US Open – August 26-September 8
Laver Cup – September 20-22
ATP Finals – November 10-17