Actually, the best legal option for mediation is to hire a mediator while both spouses have their own legal counsel.
The mediator assist you in making creating the Agreement and each spouse then takes the Agreement to their attnys to have them look it over and make further suggestions and/or alterations.
Isn't it your own job to learn the difference between mediation and legal counsel? You did say your H cut you off and you were unemployed. So yes, at that point you do need to protect yourself and your children.