The Latics visit relegation-threatened Watford on Saturday aiming to build on last Saturday's victory over Coventry.
Jewell told his club's official website: "If we don't make the play-offs we'll be disappointed but at the end of the day, if we've done our very best and still just fall short, then I can accept that.
"That's not me starting to throw in the towel; it's just being realistic."
Jason de Vos returns from a one-match ban for Wigan and may replace Matt Jackson at centre-back.
Source: Bolton Evening News!!!