Celadine, I have copied this from kellymom.com - it's my bf bible : )
Storage capacity:
Another factor that affects milk production and breastfeeding management is mom’s milk storage capacity. Storage capacity is the amount of milk that the breast can store between feedings. This can vary widely from mom to mom and also between breasts for the same mom. Storage capacity is not determined by breast size, although breast size can certainly limit the amount of milk that can be stored. Moms with large or small storage capacities can produce plenty of milk for baby. A mother with a larger milk storage capacity may be able to go longer between feedings without impacting milk supply and baby's growth. A mother with a smaller storage capacity, however, will need to nurse baby more often to satisfy baby’s appetite and maintain milk supply since her breasts will become full (slowing production) more quickly.
Think of storage capacity as a cup - you can easily drink a large amount of water throughout the day using any size of cup - small, medium or large - but if you use a smaller cup it will be refilled more often.
I hadn't thought about storage this until now, probably because I am a size 38DD and never thought I had a problem with storage 
Nevertheless, at 10 weeks my DS would have been feeding every 2 hours, day and night. In fact he fed every 3 hours or so (day and night) until he was 10 months old.
Yes, bf is different to bottlefeeding, but it is a myth that ALL bottlefed babies sleep through the night. If some do it is because formula is bloody difficult to digest whereas bm is digested very quickly and is therfore better for the baby's gut.
If you are determined to continue bf, just be patient. I am sure he will settle into a better pattern soon.
I do remember being absolutley knackered for the entire 1st year of my DS's life, but it had nothing to do with bf. I know plenty of bottle-feeders who were just as knackered as me
.
What always kept me going was the absolute certainty that I was putting my baby's needs first.
Good luck !