Boeser provided two power-play assists in Friday's 4-3 overtime win over the Blues in Game 2.
Boeser (ribs) will return to the lineup Tuesday against the Islanders.
Boeser (ribs) practiced in a regular sweater during Sunday's morning skate, Brendan Batchelor of Sportsnet 650 reports.
According to general manager Jim Benning, Boeser (ribs) "could be done for the year."
Boeser (upper body) will miss the next three weeks before being re-evaluated.
Boeser (upper body) will not be in the lineup versus the Ducks on Sunday.
Boeser (upper body) was placed on injured reserve Sunday, Thomas Drance of The Athletic Vancouver reports.
Boeser (upper body) will sit out Monday against the Predators and Wednesday against the Blackhawks, Brendan Batchelor of Sportsnet 650 reports.
Boeser posted an assist and went plus-2 in Wednesday's 5-2 win over the Sharks.
Boeser scored two goals in Saturday's 6-3 win over the Sabres, including the game winner.