It is completely normal to have prolonged redness after single needling because it is intense and it goes deep. It is not completely unusual to get blisters and it is common to get scabs (do not remove them, let them fall off naturally).
You have not done too many pricks; doing over 20 pricks is very OK.
If the blisters are cold sores (I do not think so) you can take an OTC antiviral medication (Zovirax etc.) prior to dermaneedling.
To avoid having many red lines for many days, treat only one wrinkle at a time. When it heals, treat the other one.
As we suggest in our size guide, one of the best tool for the wrinkles above the lips is a 1.5 mm dermastamp with 35 needles (single needling is also very effective here but not as easy and more painful).
If you use the dermastamp, it will also be red and it may stay red for days.
From my own experience, the area around the lips is so sensitive that a numbing cream is necessary. I do not need a numbing cream anywhere else.