Mild stammer - help needed

Mild stammer - help needed I’m 22 (M) and am starting a job doing in sales in about 2 months. I’ve never had a stammer up until the lockdown (18). It has never been too bad but I just use filler words or mumble to get through speaking. I know in my head what I want to say which is the worst part but sometimes it just can’t come out. Even when on FaceTime to my parents I can’t get my words out. However it is quite hit and miss so feel like it could be due to anxiety or stress. Any help would me massively appreciated.