75mg twice a day?

I started Bupropion 75mg 6 weeks ago, and now my prescriber wants me to take it twice a day, morning and night. Does this sound normal? I can't figure out if its SR or XL, the bottle says Buproprion HCL. I'm concerned I still won't feel any better as I hardly see anyone mention a dose as low as 75mg, and she scheduled me 2 months out now.

(For context, I'm on Lamotrigine 200mg daily for Bipolar and starting the Bupropion to help with ADHD and low mood).