Stucco too thick for fire curing?

I have used more stucco than what the instructions have said to use. This is primarily because I didn’t bend the chicken wire close enouch at the corners. So I ended up just shoving stucco thru the wire until it pressed against the blanket. This also left my 1st layer a little uneven, which i plan on adding enough of the 2nd layer of stucco to have a nice round shape. This will certainly be more than the 1/2 inch stated in the instuctions. Should I allow longer than the 3-4 days as stated in the instructions before I start fire curing my oven?