Am I doing right thing by not speaking in team huddle?

Am I doing right thing by not speaking in team huddle? Hi, I have been in my job (WFH) for last 6 month and my job doesn't require much talking with any one (occasionally with manager). And whenever there is some opportunity I always avoided it e.g not asking question to senior people SME/Manager. Just recently my manager started a initiative in which every employee have to give some presentation after every 4 days. Now I'm scared about speaking. I'm thinking of telling my manager that because of stammering I don't want to take part in this initiative. I don't stammer much in Hindi (my native) when taking casually but struggle a lot in English specially in situation like presentation, and when in group.