My husband asking divorce...

Hi, My husband and their family members has avoided me, because of i gave birth for GIRL child and they expecting more dowry too from my side. He tourcher me when baby born, he fight and try to beat my mother on 7th day of my delivery & while i go center,he push me. My C-section stitch has released, till 1.6 years, he and his parents not talking and coming to see me and baby. I talk with them, with keeping all relatives,women trust, their family members, gave police station complaint, etc. but no use, he is sailing in same boat. He asking mutual divorce to do remarry. When baby born 4 months, he applied for remarriage in Tamilmatrimony(i having his ID too). This much of days he not give a single amount.Financially im in very abd situatuion to handle day-today expense, by keeping 1.6 years baby. My final point is, i not interested to give divorce, because he tourcher me and spoiled me and my baby's life and planning to do second marriage. can you please help me to give your suggestion.As well as can u please tel me about, how to get a maintanence from my husband? and how many days it will take to approve, if i file the same in court.