Child care leave

I am Assistant Professor in a central govt University which has different study centres all over India. Me and my husband were posted at the same study centre in Asansol,West Bengal in March 2020. In December 2020 I went on maternity leave and while I was on leave my Husband got selected in another central university which is situated in our home town. When I returned from my maternity leave I requested my competent authority to transfer me to the centre which is closest to my home town but till now nothing has been done since last one year. I even applied for child care leave as I am the only care taker of my child and I have no relatives to support but it was turned down without giving any reason. this month I again I applied for child care leave as my child's physiological and psychological health is getting adversely affected but again it was turned down without stating any reason. As i could not take any further risk of his health giving station leave and one day Casual leave I headed to my hometown for his treatment. Now I wish to extend my leave period. Kindly suggest me further course of action