The on-loan (from Man City) Everton midfielder shared a series of images on social media showing his rehabilitation work after undergoing surgery on a stress fracture in his left foot. The problem emerged shortly after Everton's impressive 1-0 victory over Aston Villa on 18 January, a match in which Grealish completed the full 90 minutes.
Medical assessments later confirmed the fracture, and surgery was carried out in February following consultations between the player and club specialists.
Posting an update to supporters, Grealish admitted his frustration but remained positive about his recovery.
"Didn't want the season to end like this but that's football, gutted," he wrote.
"Surgery done and now all focus on getting back fit. I know for sure I will come back fitter, stronger and better than before."
The 30-year-old also thanked fans for their support since arriving on loan from Manchester City, saying the encouragement had meant a great deal during a difficult spell.
"The support I've had since coming to this unbelievable club has meant the world to me," he added.
"The staff, my teammates and especially the fans have been incredible and I absolutely love representing this club.
"I'll be backing the lads all the way and doing everything I can to get back as soon as possible."
Manager David Moyes recently praised Grealish's influence around the squad despite his absence, highlighting his presence at the club's Finch Farm training base.
"Yeah, he's really popular as you can imagine, very popular," said Moyes.
During the early stages of recovery, Grealish wore a protective boot and used assisted mobility equipment to avoid placing weight on the injured foot. His latest update showed him progressing with gym-based strength work as he continues the rehabilitation process.