The fifth above still throws me. Like how do I know when it is and how do I know when it isn't?
Sounds to me that potentially some ear training is in order. My recommendation to you would be to spend some time really focusing on the bass parts in the music that you're already listening to.
So I guess what I was getting at is since so much of just the "basic" theory is so confusing to me should I talk with him about maybe easing off the theory and just learn songs and play? And try to understand it as I go? Like maybe I learn a song and after I've learned it we discuss some of the theory with it?
This seems like the perfect next step to me, and as far as I'm aware isn't an uncommon way of teaching either.
Good luck! Keep with it, and whatever you do don't get frustrated!
One quick note, I remember back when I was first getting started (on guitar but it still applies), one thing that helped me was the fact that I was pretty much inseparable from my guitar. Any time I was listening to music or even watching TV, I'd have my guitar in my hands noodling along - either along with any music I was hearing, or just in general. Over time, even that type of low-key experience builds up, and in a month or two you'll be able to look back and see how much you've advanced.
There really isn't a wrong way to learn how to play an instrument. Do what works for you, and more than anything, just have fun and play!

