It will be very difficult but when you get up to present just tell the audience, “you may not know me as someone that stutters but I’ve been stuttering lately and may stutter a little bit in this presentation. Just want to give a disclaimer!” Say this with a smile on your face. And this should reduce some anxiety. I would really recommend the Dave McGuire course. They have an inexpensive self help book on Amazon called “Beyond Stammering: The Mcguire Program for getting good at the Sport of Speaking.” You can have the book downloaded onto your phone in minutes if you get the Amazon Kindle app. The book will go through psychological reasons for stuttering, give you a breathing technique, and inspire you to get out and practice speaking. The program will be fear inducing but use the people closest to you for support. Keep practicing the techniques and follow what the book says. Then I recommend reading “Redefining Stuttering” by John Harrison, someone who stuttered for many years and was part of the National Stuttering Association for many years. You can find a free link to the book if you google the title. If you can’t find it I will help send you a link. I was surprised to find the book for free after seeing it was sold out on Amazon. Take it easy man. Ruminating on this won’t help. You need to refocus on to things that make you feel happy and at ease. Because you can’t worry if you’re fully focused on the positives. You can fight against yourself and try not to stutter in front of others but that will only make the force stronger. You can only accept yourself as someone that stutters sometimes until you are happy with who you are, then your stuttering will probably decrease at that point