Jeremy, if you haven't tried it before, take a look at Ryan Barrett's Instagram Atom Feeds tool https:/
As for extracting your own photo data, I've heard this week that although Instagram is cutting off more and more API access, while confronting the Facebook problem lately and the looming GDPR, they've apparently enabled the ability to download all of your photos. I haven't tried it yet to see what the data looks like or the quality of the images is, but it's a tiny step forward for data freedom that they didn't have before.
Heh. Good advice. I do in fact use Ryan’s service. One of my links in that piece points to it in case anyone else is curious.
Jeremy Cherfas, Apr 15 2018 on stream.jeremycherfas.net