“[I’m] just getting treatment every day and working,” Jones said. “I feel confident and just working through it day by day. That’s all you can do.”

Jones played through the knee issue in last week’s win against the Los Angeles Rams but indicated Thursday that he suffered the oblique injury at the end of the game. It is unclear whether he’d have returned had the offense gained another possession.

Thanks to a couple of extra days of rest because of the Thursday night game, Jones said he has been focused on treatment and doing what he can to help his recovery, such as monitoring his sleep and what he eats.

On Thursday, that included a limited throwing session during the individual drills open to media. Though Jones did some soft tossing during the first period of light warmups, he did throw during the third period of practice when the quarterbacks are passing to receivers running routes.

“I was just trying to save some throws, and there’s a lot of volume out there,” Jones said. “At the end of the day, [I’ve] got to be ready for Sunday.”

With Jones’ reduced practice workload and Purdy not participating again (though he did some conditioning on a side field), Adrian Martinez got snaps with the first-team offense. Martinez has served as Jones’ backup in his three starts this season, and Martinez was promoted to the active roster from the practice squad Oct. 2.

Martinez has not played in a regular-season game and has been with the Niners since signing to the practice squad Aug. 28. Offensive coordinator Klay Kubiak said if Martinez has to play against the Bucs, he wouldn’t be overly limited by his relatively recent arrival.

“I think he’s right where he needs to be,” Kubiak said. “Super impressed with Adrian since he’s been here. Really smart guy. He’s gotten a little more reps just because of Mac kind of progressing a little bit through the week and Adrian hasn’t missed a beat. He’s been on it. I feel like he can go out there and run our offense.”

In last week’s game, there were multiple moments when it appeared Martinez would have to replace Jones. Considering what Jones is dealing with again this week, Martinez likely will again have to stay at the ready even if Jones starts.

Jones, meanwhile, remains hopeful that another couple of days will have him feeling better.

“The game is not today, right?” Jones said. “I don’t really do the theoretical questions but definitely feel like I have a good plan in place. The game is on Sunday and see how I feel when we get there.”

Elsewhere on the injury report, 49ers receiver Jauan Jennings (ribs, ankle) and defensive tackle Alfred Collins (knee) returned to limited practice after not participating Wednesday.