ASD strategies and support

Dear all, 
I am currently working with a pupil in Early Years who is 3 years old with a diagnosis of ASD and SPD. When this child started my school he had a phobia of clocks, which he still has to this day. However behaviour and tolerance has slowly started to decline this term. This child now shows crisis type behaviour with any sort of moving objects on a screen (Laptop, Ipad etc.), cannot tolerate lights, this being lights on a radio (the little standby lights), laser/sensory lights and wrist watches. This is quite a bizarre case I know, and would greatly appreciate some ideas of how to support this young boy? 
We are thinking it is a strong emotional memory reaction to a negative situations involving such objects above, however families lives are now becoming affected and accessing the community for them is becoming impossible. 
Thank you for your help.