The 32-year-old has been recovering from a muscular strain he sustained in Uruguay's 1-1 draw against Paraguay in a World Cup qualifier earlier this month.
Forlan has not set a date for his comeback, but cannot wait to get involved once he is given the green light by the club.
"I am recovering and doing lots of physiotherapy so that I can soon return to the pitch as this is my main objective now," Forlan is quoted as saying by La Gazzetta dello Sport.
It has been a slow start for Forlan following his injury, but his assessment of life in Italy thus far is a positive one.
"I have not been here very long, but I have adapted well. I am happy in Milan and it was nice to swap it for Madrid," he said.
"Things are going well, we have some great players at Inter and they have helped me to settle."
Inter take on Atalanta in Serie A on Wednesday night hoping to build on Sunday's 1-0 win over Chievo.
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