I too am an SLP and agree with what Eema has to say. in addition make sure you have an open dialogue with the therapists. What are your child’s areas of difficulty (from both your perspectives)? How are they trying to address these difficulties? How long have they been working with your child? Have them explain what they are doing. Often it may look like they are doing nothing but they might be establishing rapport, teaching play and social skills or first addressing any issues that might need to be addressed (ie attention span, compliance etc). if you’re still not satisfied it is every parents right to find the best therapist for their child. Feel free to add additional info and I will gladly try to help.