Lawson suffered the injury March 19 in a 114-104 victory against the Oklahoma City Thunder, causing him to miss four of the next five games.
Lawson leads Denver in scoring at 16.7 points a game and dishes out a team-leading 6.7 assists per contest for the Nuggets, who are 50-24 this season and have already clinched a playoff berth.
“I have a feeling that he had somewhat of a (partial) tear in his plantar fasciitis and that’s untreatable,” Nuggets head coach George Karl said to Nuggets.com. “But popping it creates a situation where now once the soreness goes away, he probably should be able to be pain-free. It could come in a couple weeks. “His job and our job is to figure out how to get him feeling 100 percent and having some confidence playing the game of basketball. I think it’s a situation where it’s going to work out. I’m optimistic about how it’s going to work out.”