I am uncertain where you live but I would suggest you try a supplement , All children and especially those with concentration and learning difficulties benefit fom a Multiple vitamin-mineral
supplement with antooxidants ,B Complex and
Vitamin C also some parents say Fish oil helps. Here there is something called' Attend Vaxa,' it is again a natural supplement ,this works on a sub-molecular level to improve Focus, concentration and memory , you can google it for more information.