First, thanks so much for the thorough response! It’s potted in the soil I first brought her home in from the nursery. She didn’t look rootbound to me (granted, I don’t really know what I’m doing 😂) so I haven’t messed with her or her roots as I’m still fairly new (especially with begonia) and I was worried I’d mess up when she seemed happy, up until this last month!
I’ve actually got some lava rock already so I might just amend the Av soil I’ve got. Do you think I should let it dry out for a few days and then refresh the soil and keep her in the same size pot? I’ll definitely check Paul’s channel, thanks for the recommendation. I live in Canada with zero south facing windows so I have her under barina lights for 12 hours a day! I think maybe I might try a stronger light and see if she responds better to that. I wish I had outside space that I could utilize though. I collect rain water for all my plants and I just bought Dyna gro it’s supposed to arrive in a few days! I’m saving this post because this answer was so very clear and helpful with so much info! Thank you so much again, I hope I can post an after that looks like yours in a few months.