Weaning off breastfeeding help

My son is partial breastfeed/partial formula. He’s 7 weeks old and I want to wean off breastfeeding and go only formula. Whats the best way to do this without becoming engorged or getting leaks?

(I don’t produce enough milk for my son. He’s a very big baby and has a huge appetite and my supply has always been low. and I’ve tried everything possible and it’s just not working out for me. I’m also going back to school next week and can’t be pumping constantly just to get an insufficient amount. So please I want honest feedback and not pushback or rude comments about choosing not to breastfeed bc that’s all I’ve been getting from my friends and some family members 😢).