Need help with my extremely specific speech initiation block

Need help with my extremely specific speech initiation block So whenever i dont sleep too well i start having some problems with my speech, like not being able to say start a sentence Now i am in college and we have to call out our roll no. One by one when i haven’t slept well i get some anxiety wether i will be able to say it properly or not But now this pattern has been enforced so many times i just can not get my roll no out during the roll call My roll number is 58, i am left w shaking my jaw but no sound coming out. If anyone can point me to any technique that i can follow it would be a massive help