Re: need advice on positioning and frequ
Semi-reclined positions might be best. Maybe lying in the bath? I would think the warm water might help soothe your sciatica, and the water would buoy you up and maybe take pressure off the nerve...
As to feeding frequency, gosh, who knows? Some babies quickly start sleeping through the night, others won't give you a 5 hour stretch until they are a year or more. Have you tried feeding more often during the daylight hours? Sometimes tanking a baby up during the day will buy you a longer stretch at night. If that doesn't work, I suggest reading Elizabeth Pantley's book "The No-Cry Sleep Solution" for a basic primer on infant sleep and some gentle strategies for encouraging longer, more independent stretches of sleep. I wouldn't expect much right now- your baby is still so young. Since he was premature, it is going to take him longer to reach milestones than his chronological age would suggest.
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"