If you do need to top-up/supplement on your breastfeeding journey, there are ways to do this that are more breastfeeding friendly than bottles. Bottles can easily cause bottle preference, overfeeding and a change in baby’s latch, all things you want to avoid if your goal is to continue breastfeeding.
You can use a Supplemental Nursing System (SNS) which has two thin tubes that lead out from a bottle/syringe and stick to the side of the nipple, so that baby sucks milk through them like a straw, while suckling on the breast, providing stimulation to increase milk supply.
Cup and spoon feeding are also options, as well as finger feeding and syringe feeding.