Fulltime ABA therapy for a 19 month old

My son is currently 19 months old. He recently got diagnosed with ASD level 3 and is going to center based Speech and Occupational therapy.we also enrolled him in early intervention for ST and OT. We were looking for ABA therapy since his neurologist recommended it and got an opportunity to enroll him at a center which does ABA full time. Where he will have an assigned BCABA working with him. The center needs 85% attendance every month and he will have to stop going to ST and OT sessions. We are concerned he will have a burn out and not sure whether to join him there.if we enroll him there we will have to stop STs and OTs.