One way to balance well is that as a developer you need to play through your game without any problems. In your case I would also test different playstyles to see if the game is still feasible. But I understand that balancing in a game jam is very difficult. That's why most jam games are difficult.
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Good point! If I had more time I definitely would've tried to play using more various playstyles. As it stands I was using the same strategy a lot, which I know worked. But yea, like you said, balancing in a game jam is difficult, which is ultimately why I just left it the way it is and focused on polishing the overal game more. I appreciate your comments though, always like chatting with a fellow dev about these sorts of things