[Strawbale] used to much sand to cement

[Bruce Fraser]

I just plastered much of my south interior wall and parts of the exterior
south and north wall. Some of the batches I think had to high a sand ratio
(maybe 6 sand to 1 part cement) and I am worried it might not dry hard.
Does anyone have any suggestions for how to harden up the plaster? It was
done between 8 am and 6 pm Sun July 2. Should it be done asap or after it
dries?

Thx

Bruce