1. How I can get at least weekend custody ? Pls inform along with case reference & IPC number . I can request modification by 2018 March.
You can file an application under section 151 cpc in the same IA seeking to modify the orders on interim relief i.e., child visitation or you ca file a child custody case and seek fresh orders on the interim relief for visitation rights.
2.They are not informing about my son even if he had hospital admission . What are the steps to get my rights?
You cannot have any remedy for this in law.
3. They will admit my boy on any of the school by 2018 April . I will not be informed
about the school or will not allow me on his school. What I need to do to have my rights on my child ? What type of case I need to file ?
You can put all these things in the child custody case application to make your case more stronger
4.what type of petition I need to file since they are not informing even my child admitted on hospital ?
you can make it a point to put them as pleading in the child custody cae making a strong case to prove that the child's well being is of paramount importance.
5.I have filled RCR but they got stay from high court because she residing 130 km far from my house . Transfer petition was pending for last 4 months in high court . I don't know why is like this.what I need to do get my rights ?
That is the court procedure.
6.Even if she return , I am sure that , she will trap me ,my mother and brother in any case and return to her house denying my rights on my 4.5 yr boy . What I need to do? Pls give your valuable replay.
That will not stop you from claiming your rights, you have to fight that menace also accordingly.