Can you bring the inconsistency issue up with children's T? Tell her this is a problem, ask when she expects she can get them back on whatever schedule you had. If that timeline is unreasonable, I would say it's time to find another T for children.

I wouldn't expect children's T to chase you at this point. It may be upsetting initially but you and your children will have less dissatisfaction and trouble if you take control and be up front with what you and children need. If their T can't provide that, time to move on.

I would not involve your T in this other than support for you during any needed change in children's T.