Should he try not
    to have children with his Christian wife?
Question

                married with a christian; also have
      converted to islam from Hinduism myself. Wondering, if it is okay to try my best to not
      have children with this christian wife since there is no agreement on raising the child as
      muslim.
Praise be to Allah.Firstly, we would like to offer our congratulations to you
    for the blessing that Allaah has bestowed upon you by bringing you into Islam. We ask
    Allaah to help you to be steadfast in Islam and to die as a Muslim.
Secondly, we do not advise you to prevent having children with your
    Christian wife, for two reasons:
Having a lot of children is required according to sharee’ah. The
        Messenger 
 (peace and blessings of Allaah be upon him) said: “Marry women who are
        loving and fertile, for I will be proud of your great number before the other nations on
        the Day of Resurrection.” (narrated by Abu Dawood, 1754; al-Nisaa’i, 3175;
        classed as saheeh by al-Albaani (may Allaah have mercy on him) in Adaab al-Zafaaf,
        p. 132)

It is not definite that your wife will remain a non-Muslim. Allaah may
        bless her with Islam as He has blessed you, then you may regret having gotten older
        without having children to bring up in the right religion and with proper manners.

So we advise you not to prevent having children, and to try to call your
    wife to Islam – maybe Allaah will bless her with Islam.
If Allaah does bless you with children, then you have to bring them up in
    the right religion and with proper manners from an early age. This is one of the duties
    that Allaah requires of you, and your non-Muslim wife has no say in the matter. Allaah
    says (interpretation of the meaning):
“O you who believe! Ward off from yourselves and your families a
    Fire (Hell) whose fuel is men and stones” [al-Tahreem 6:66]. 
The Prophet 
 (peace and blessings of Allaah be upon him) said: “Each
    of you is a shepherd, and each of you is responsible for his flock… a man is a
    shepherd of his family and will be asked about those who are under his care…”
    (narrated by al-Bukhaari, 844, and Muslim, 3408).
And Allaah knows best.