hj. All the best figuring things out. It doesn't sound like you're too happy about stopping breastfeeding - I'm guessing maybe you're not feelign too well supported at the moment.
You OB is probably not the best person to be talking to about this.

Just by the by, it is possible to combine feeding and work/study, or even part-time bfing if that works better, as meow suggests. The ABA will have resources about returning to work/study with a breastfed baby that you may find useful. I know there are many on bb who have also done the same and will have lots of advice and support for you.

Take care of yourself