Mims, who missed New York's past three games, opened up on his status Friday.
"It was tough," Mims said. "Actually getting in the lineup and then the next following week, I come up with COVID. That was just tough. It's frustrating, but God got me. So I know I'm just going to keep pushing it forward. It's all I can do."
Mims added that his main symptoms were body aches and vomiting.
Last time out, Mims was targeted five times and caught one pass for 20 yards Nov. 4 in a 45-30 loss at the Indianapolis Colts.
"I wasn't happy with my performance," Mims said. "I left a lot on the field. I can't get myself down, though. I've just got to keep moving forward, accept the things I went through that game and just keep pushing forward, honestly -- just keep my mind positive. Just come ready to play Sunday, honestly."
In six games this season, Mims has caught seven passes on 14 targets for 129 yards (18.4 average) and zero touchdowns.
The 2020 NFL Draft's No. 59 overall pick as a second-round selection out of Baylor insisted that the playbook and route tree has not been an issue.
"I'm good on that," Mims said. "I'm comfortable with that. I'm good when it comes to that part."
As a rookie on the 2020 season, Mims registered 23 receptions (44 targets) for 357 yards (15.5 average) and zero touchdowns.