It is always a tricky one, here are a couple of other things you could try:

A dream feed at around 10-11 pm try not to wake baby but gently pick him up and place him on the breast, you may have to encourage him to feed and try for a few nights.  The theory is it keeps them full for longer and they sleep a bit more.  Hopefully by passing that midnight wake up.

I used a dummy with my third child because i just needed to sleep...not everyones cup of tea and wasn't mine until now!!

Try re-settling him without breast feeding, by shhhing and patting and i found that if Dad goes in to re-settle it was better as they can smell the milk on Mum.  Although i didn't stop night feeds until my children were about 5 months old.

Swaddling is also good as they can startle themselves awake with their jerky movements and they like the confined feeling.  I found my baby was a bit over swaddling at this stage (maybe 4 months) and strong enough to get out of the wrap but i have heard of people using it for up to 6 months

Anyway there are a few tips you could try, otherwise you will find it wont last forever and he will eventually sleep longer and longer.  i was also going to say, try getting him to sleep during the day as it can really effect a babies night sleep, you would think they'd be so tired they'd sleep at night but the opposite happens.

cheers Julie

I can relate.  My son would do the 30 min nap then wake up crying, of course I got into the habit of picking him up.  One thing you have to remember is that they learn habits.  So if you are getting him shortly after waking and you know he is still tired, let them fuss a little and try to have him fall back asleep on his own.  He will learn to sooth himself and in turn sleep better in the day and at night.  But since he is BF it may be awhile before he will sleep thru the night, and this is very normal.  Now that I let him fuss and he is self soothing himself he will only wake at night if he is hungry, which is an imediate cry, whereas he will just squirm if it's him just waking up, but still tired.  Also, being so young he needs to sleep during the day, alot!  He could also be suffering from sleep deprivation, which makes it even harder for him to fall asleep and stay alseep.  It's like they become either super hyper or always cranky....My daughter suffered from this when she was this age and I had to make sure she slept alot to catch up and get back on track.  Hang in there and Good luck!!  Any quesitons feel free to minti mail me!