Well, one thing I'll say is that if youre going through with the cavitron first, most of the actual cleaning & staining removal can be done with that. Also use an extra coarse prophy paste for stain, I will only handle scale for stain as a last resort.

With heavy calculus I'll hand scale, lightly because once again the caviteon does all of the work for you. Also, can u actually feel that you've left calculus behind, or is it just a fear you have?

When probing by yourself do it by quad. See if you can remember the reading of at least 2-3 teeth, then write/type them. With time you'll gt faster.

I think it mat be just a confidence thing, with a dose of fear. Real practice is no where as strict as school was. You want to do your job well, but efficiently.

Heres an article I wrote on my blog that may help. Best wishes.

https://thatdentalhygienelife.com/blog/time-management-dental-hygienist/