I'm a startup developer, but it's hard because I don't have acrying

Hello, everyone I'm an office worker who is working hard on developing apps while working on a startup. I had a chance to receive private tutoring from a third-year developer of IT conglomerates through an acquaintance while studying alone and struggling with dependency injection and architecture It's a good opportunity because I didn't have a chance to shoot, but I'm still worried. The time is about an hour and a half, so it's 70,000 won per session! If you have similar concerns, do you get mentoring? I don't know if it's expensive or anything like that<