How to present with a stutter?

How to present with a stutter? So I have a really important presentation tomorrow and I'm so nervous because of my stutter :( I already know that I'm going to fail again, it makes me feel so hopeless... No matter how hard I try and practice, it doesn't help at all and I'll just end up embarrassing myself again. The presentation is really long and gotta last at least 15 minutes, my previous ones were catastrophic... I couldn't utter a single word and just froze then cried :( as a college student it's embarrassing for me