A nursing strike can be super frustrating if your baby is rejecting the breast. Offering the breast every feed while maintaining your milk supply with pumping will be crucial while you get through this period. Trying to change up the position can be helpful. Make sure your baby is not frustrated while trying to nurse. You may need to stop, calm your baby down and then try again. Trying to offer your baby the breast before your baby is due can be helpful, so your baby is not too hungry. Lots of skin to skin in between can be helpful. Hand expressing a little milk on  your breast to entice your baby to nursing is another trick. Also make sure there is nothing anatomically going on that could be causing this.