Since all divorcing couples are different there is never a fixed time frame. In very general terms, a divorcing couple with two kids and a house might expect their divorce mediation meetings to consist of about five, two hour sessions, spaced two weeks apart. Every spouse in divorce is absolutely entitled to be represented by a lawyer at any time. On the other hand, no divorcing spouse can be compelled to retain counsel. Some divorce mediation clients are represented by counsel from start to finish.
Some clients hire an attorney solely to review documents.
Some never hire a lawyer. I advise all clients in divorce mediation to seriously consider retaining counsel, at least to review the separation agreement before signing it. As a lawyer and mediator, when I am jointly hired by a divorcing couple I act ONLY as their mediator. I never represent either divorce mediation client as an attorney. As a mediator, I do not appear in court with a couple at the hearing of their divorce.