I somehow managed to find a Nickelodeon sitemap thingy that downloaded a document to my computer, and I think I found all the titles for the remaining episodes of Sanjay and Craig Season 3
309 - Paper Pushers/Bros of a Feather
310 - Ain’t No Fang/Balzalderac!
311 - Master Smashers/All Couped Up
312 - The Sanjay and Craig Stunt School Special
313 - Combo Attack/Stuffed Cursed Pizza
314 - Quietude Dudes/Diaper Dinks
315 - Halloweenies/G.U.T.S. Busters
316 - SongJay/Man of Squeal
317 - Friend Car/Beach Butts
318 - JJ and Greg/Tuff Rider
319 - Space Train to Space/Snake Pit
320 - Booyah for Bollywood (Season 3 finale, and likely Series Finale)
I am not 100% sure they are real, but knowing they were leaked on a official Nickelodeon site, they probably are. After all, they’ve confirmed that the GUTS episode will be happening and the finale will involve The Patels taking a family vacation overseas.
If anyone wants to take a look at it, the link is: www.nick.de/sitemap.xml.gz