Alterations for BM

My wedding is 10/9, when should my girls go for their fittings?

August, September? Do they have to go for more than 1?

Many thanks!!

My wedding is September and my MOH already got her fitting and the other two girls will be going early August to mid August.

They said at our place that he should only take two weeks for them to get done.. but just in case we will have some time.