Trying won't hurt as long as baby still takes bottle but unfortunately lactation in all mammals is a supply and demand thing. After delivery your milk comes in. If you don't nurse/pump/hand express you start "drying" up. Kudos for trying. Also oxitocin, the hormone responsible for "letting" your milk down, is the same hormone released after orgasim. Be safe and try that before pumping/nursing.
'
Firstly good on you for trying to breastfeed, if you can manage it it is a beautiful thing...
A mothers body is designed to produce milk in response to the baby's suckling. The more the baby feeds and suckles, the more the breasts produce milk. The sucking (or using a pump to express) is the key to increasing the amount of milk, so basically keep at it! On the down side, for some women, a small amount of time not nursing can dry up the milk.. so it may be that it has been too long. Sucking from the mothers breast is in fact more work for a baby than using a bottle, so you will need to put in heaps of time encouraging the wee one to suckle from the breast, try squeezing out a few drops to sit on the nipple before "tempting" bubs with it so he can get the taste. But if it is stressing you and the wee one out, its not the end of the world if you cant get the breastfeeding going. Try your best but don't feel too down if it doesn't work out...Just holding baby close on your bare skin (baby's love skin to skin contact) on your chest can be great bonding. The best people to ask for advice would be your local Le Leche league if you have one or your doctor or maybe even paediatrician.. Or mothers you know who have successfully breast fed. Good luck :)
I would suggest visiting the Breastfeeding community. There are many ladies with LOADS of experience willing and ready to offer!
if the baby is used to bottle have u tried putting some in to that. i couldnt breast feed from the start i even tried just squezzing and sucking it up a suringe pump but nothing they say the first bit is always important to a baby but dont confuse the poor thing just stick to a bottle,