johnworf milk supply dropping at this stage is fairly normal, you are stressed and do not have the stimulation of your baby actually sucking. But take heart even if you are just producing a dribble until she is able to get onto the breast it can be increased.
Some Mums find it very easy to eat and drink well with a baby in NICU. Your mind is so focused on them you forget yourself. Make sure you are eating 3 meals a day PLUS some healthy and non healthy snacks in-between. Also make sure you are drinking NICU's are hot places take a bottle of water in with you with a sport type cap and sip throughout the day, refill it as needed. When you have a meal have a drink, have a drink when you express and have drinks in-between when you have a snack too aim to be drinking about 3 litres a day. If you do not put food and water in at a time when your body is under stress it will not have the ingredients to make milk.
Have you your own pump or is it one rented from the hospital or NCT? the ones rented or borrowed are a lot more effective than any you can buy for this sort of long term expressing. If you have not been offered one of their pumps or given numbers for the NCT ones please ask this alone may help.
The other thing your breasts need is stimulation. Are you still expressing 8 times a day? If so fantastic if not try and increase back up to that. There is another very sad fact which proves god was a bloke one of the best times to express is between midnight and 2am it is when your hormones are at their highest and it is often a really important time to kick start your body into producing more. It is a balance though between doing that and getting over tired if you find you are getting too tired then have a night or 2 off a week just to replenish yourself. You will not get any more milk at that specific time bit in the morning and through the day you will gradually increase things. It is also a great time to ring up and ask how Katherine is because it is relatively quiet and you will not have to wait long. Have you been shown how to double pump? If not ask the hospital it can be really helpful both in saving time and increasing milk supply.
Do you express milk looking at a picture of Katherine? I know many Mums who found this helpful anther trick can be borrowing a sheet that has been over her and sniffing it, your sense of smell will be incredibly acute at this time and it will smell of her and this can often trigger the hormonal response for your milk production and let down reflex. Other things that can help are Milk Ejection Stimulation.
Keep asking when she will be strong enough for Kangaroo care (skin to skin) that will help your milk supply, at about 32 weeks she will be ready for a lick at the breast too which again will help
There are also some natural supplements you can take to try to help increase it Fenugreek, blessed thistle, and alfalfa are the ones I know talk to the staff at the hospital or your Midwife about their benifits.
Have you stopped bleeding of is your discharge still as heavy if it is still heavy see your midwife asap very very occasionally a small piece of placenta is left inside this can mean your uterus does not contract properly so you continue to bleed it also effects you milk production.
If none of that works there are also 2 drugs your GP can prescribe metoclopramide or domperidone if he is funny about it because it means prescribing off licence and for their side effects then talk to the staff in the hospital they should be able to provide leaflets which you can give to your GP to explain why.
www.marchofdimes.com/prematurity/21295_6091.asp
www.kellymom.com/bf/supply/maintainsupply-pump.html
You can down load this PDF it has some good tips www.milkmemos.com/pdfs/Supply_Tips.pdf
Fenugreek0
Fenugreek1
Going to replete my self but as long as you are producing a dribble of milk when Katherine comes to suckle your milk supply WILL increase.