How do I change a stipulation order for my childs therapist? I want to use a provider that is covered by my insurance.

I have sole legal and physical custody of my 10 yr old child. At the begining of this year her bio father (who had been absent for 6 years) was granted one overnight visitation every other weekend. My child was not happy about the change and to ease the transition I requested she attend therapy. My Lawyer recomended a well know, but expensive therapist ($800 mo for 4 visits) that does not take insurance. It turns out the therapy will be going on for a long time as the transition is still difficult for my child, so i would like to switch to a provider that takes my insurance plan. What do i need to do to make this happen? Do I have to use a Lawyer again? - Is this your question? Add additional information