not looking for a team or anything (: just wanted to reach out to the community and see who else is hitting this solo. May your scope be small!! Good luck guys!
I've been basically solo for all 12 of my 13 jams so far. This one has a 30 day timeframe so I'll be able to scope out pretty big as I have a lot of time on my hands. Here's my last solo 30 day project for a previous jam. I'm pretty hyped about this theme, I will probably do a three JS 3d Platformer (HTML, with Three JS) but not totally sure.
/jam/alchemy-jam-7/rate/4154591
I have made one other game for a game jam, but I attempted to make another one way before that. It failed because I tried to submit it on the deadline and due to errors with memory, it wouldn't work. My biggest piece of advice is to check that your game works on itch.io every once in a while to see if there are any major bugs. Also, write out before you start what you want to add to the game, so you can scope out a rough 'schedule' and make sure that you can achieve everything in a month. One last piece of advice: if all else fails and the game can't be submitted (worst case scenario, I know) continue to work on the game if you have time, and maybe you can publish it yourself on your own time.