Your 3 month old cousin is suffering from fits
or epilepsy. As you mentioned he has calcifications seen on MRI
. The cause of these calcifications could be an intrauterine infection or some other perinatal insult. But what is alarming in this case is that such a young child is on 3 drugs (levipil,gardinal,valparin) to control fits. All these drugs have their share of side effects and using them together without proper titration of doses can cause more harm than good to the child. Secondly nootropil is not prescribed for fits. I strongly recommend to take the child to a paediatric neurologist
(if one is available in your area) or a paediatrician who is experienced in managing childhood epilepsy
Regarding your second question, it is difficult to comment at this stage regarding the prognosis/chances of improvement. Detailed history, examination and investigations can give a clue. But at such a young age it is very difficult to predict the outcome. It is only on follow up and depending on how well the fits are controlled can a doctor give an opinion regarding the prognosis.
Hope that helps.
Wishing you good luck.