(b) Except in extraordinary cases supported by specific findings set forth in the order granting relief, payments of temporary spousal support and temporary child support are to be made from a party's income and not from the corpus of a party's separate estate, and an award of such relief shall not be disproportionate to a party's ability to pay as disclosed by the evidence before the court: Provided, That child support shall be established in accordance with the child support guidelines set forth in article 13 of this chapter.