Hello,
(bit of background - bear with me is a bit long...)
DS, my first is 18 days old. He was born by ELCS as I have a massive fibroid; which haemorrhaged during delivery so my haemoglogin dropped from 12 to 7.5. All under control now (had iron transufsions and now taking tablets, but will take about 2 mths to get back to normal)
DS weighed 2.8kg (about 6lbs3oz) and within 2 days weight had plummeted to 2.4kg (about 5lbs 8oz) After 5 days the hospital wanted me to supplementary feed with formula to help him gain his weight as he had only gained about 20g - at that point. He is almost at his birth weight - nurse is coming to weigh hom today.
Had loads of conflicting advice but basically now I bf between 20mn to 40mn. I reckon he gets about 1ml a minute based on the limited expressing I have been doing once he has finished feeding, (just to check my supply and give him a little boost when he is ravenous at the beginning of the next feed, although I have not done this in about 3 days due to general knackeredness 
) On top i have been giving him formula based on hospital & maternity nurse's advice. DS takes between 60ml - 90ml (2-3oz) per feed. (Which is erratic - he used to go 3 1/2 hrs between feeds - which could take up to 2hrs) now he is getting hungry after 1.5 to 2 hrs.
I am happy to bf him as long as he wants; his latch is now strong and sort of sleeps and feeds, however I want him to have enough space for a formula as that is what is boosting his weight and he has been a bit sicky with too much volume, so need to get the balance right between breast milk and formula.
so back to the original question:
I want to keep breastfeeding - a min of 6 mths would be my ideal. He is a hungry boy so have resigned myself to having to suplementary ff. however what can I do to boost my supply? increase quality of milk so it is ore satisfying for him?
TIA for advice!