You may find that bottle feeding is the only alternative feeding method that works after exploring the other ways. Bottle feeding can be useful if the infant has difficulty opening their mouth to get good latch on the breast. A word of caution, babies who switch back and forth between bottle feeding and breast feeding are likely to suffer from nipple confusion. Bottle nipples flow faster an easier than the breast and babies can often develop dependency on the easier method.
You may find that having your partner be the one to offer bottle feeding will reduce the nipple confusion. It is a great way to get your partner and their child to experience a little of the connection you are building with breastfeeding.
Be sure to talk with your doctor or lactation consultant before embarking on an alternative feeding method.