Photo numbering

I use my DJI Phantom 4 Pro And DJI Phantom 4 Pro V 2.0 to take photos using Map Pilot to upload to Maps Made Easy for processing. I sometimes take more than a thousand photos. My problem is the camera numbers them in groups  of 1 thru 999. I have to have a friend up load them to a light room program to renumber them 1 thru 2500 for example. He struggles each time to do the renumbering, I would just ruin the photos. 

I’ve tried setting to “Coninuous”, still it groups the starting photo thru 999. I can upload the first group of 1 thru 999. The second group with duplicate numbering won’t upload. 

Is there some thing you could recommend,that I’m obviously overlooking?