The 27-year-old Scotsman picked up two world championship points last time out in India following a seven-race run of finishing outside of the top 10.
The 2013 season started well for Di Resta, who has now been at Force India for the best part of four years, as he finished in the points in seven out of the opening eight races - including fourth place in Bahrain.
With just three Grands Prix remaining neither Di Resta, nor his Force India team-mate Adrian Sutil, are not guaranteed to be driving next year's car as owner Vijay Mallya revealed he does not expect to announce his line-up until December.
Di Resta has no immediate concerns about a new deal but admitted he would like to know before the end of the year to give him the chance to make the most of other options.
"I don't think I'm worried about it," he said.
"At the end of the day I think I have had some remarkable results this year but I think it is just unfortunately a difficult time at the moment.
"It is not for me to comment on, they will do it when they want to do it. I think they said they would give an impression after India. I would certainly like to think there would be a decision before [December]."
Force India are not alone in needing to finalise their 2014 driver partnership as both Williams and Lotus are yet to confirm either seat and the likes of McLaren, Sauber and Caterham still holding one vacancy, as Di Resta aims to allow his recently re-discovered form on the track to do the talking.
"The whole of the midfield are quite uncertain at the moment," he said.
"The team is giving good feedback and they said they were having a board meeting in India and they would come back in good time. That was always the way it was going to be and nothing has changed from that.
"I will concentrate on doing my job, they know what I can do and it is all given and delivered but equally you don't want to lose any opportunities up and down the paddock. It is out of your control at the minute with how Formula One is [financially]."