My baby is 4 months old and since she was 5 weeks old has had a bottle of EBM given by daddy.
This really suits us as it means from 5.30pm I have time to sort laundry and cook our dinner etc etc. (I LOVE cooking). It also suits Daddy as it gives him some proper Daddy time each day. Neither of us want to change this.
My baby feeds:
1 breast at about 7.30am (& I express the other)
2 breasts at about 10 / 10.30am ish
2 breasts at about 1pm ish
2 breast at about 3.30pm ish
1 breast at about 5pm ish
8oz bottle at 6.30pm
2 breasts at 11 / 11.30pm ish
2 breasts at 3.30am ish.
I express both breasts at 7pm and 9.30pm ish. (same time each day and have been doing so for months)
My issue is she has recently upped her milk to 8oz, and I only express 6 - 8oz a day. (normally nearer 7oz)
I am now not pumping enough milk to sustain her bedtime bottle 
I take fenugreek and eat and drink well.
I have decided that once she is 6months old and has had cows milk as part of her diet, I will give her a bed time bottle of formula (as I am fed up of expressing all the time) But i feel very strongly that I dont want her to have any formula before 6m.
I plan to start weaning her at 5m, so will also need milk to mix with baby rice etc, so i guess i will need perhaps 10oz + a day.
We have 2 nights out planned as well and will need to leave a bottle with the babysitter, though i hope to be home before her 11pm ish wake up.
I have a fair bit in the freezer (14 5oz bottles i think), but Im not convinced this will be enough to get her until 6 months old
Also i was pumping enough milk for Daddy to do a couple of night time bottles a month (about 1 bottle every other weekend so I could have some unbroken sleep) and it really upsets me to think im not going to be pumping enough to enable this to happen.
I have 3 pumps, hand pump, swing and medala freestyle and get the same small amount of milk regardless of which pump i use. I use my freestyle 99% of the time as its a double pump, so much quicker and doesnt need a plug.
I really dont want to buy any other pumps as have spent rather a lot on breast pumps already.
Any tips?