Dude I work in small startup as well and we are a team of 13. Trust me it's normal. Startups have to work at fast pace so can't waste time in documentation etc soon you will get the hang of it. Once startup gets they can allocate some team members to do the laundry.
I need a backend ,frontend developer
and AI developer
If anyone is interested in my startup please dm me because I need team members
startup name - nebulamarket