Hello!
I don't know how you define "high needs" but I have had MAJOR tutting from my mum about how none of her 4 dc's were anything like as hard work as my 3.5mo DS
"why won't he sleep in his pram"
"why won't he sleep in his cot"
"why can't you put him down, he needs to rest his back"
"he's crying again, he must be hungry"
"babies should be left alone for quiet time, not constantly held"
"WHAT IS WRONG WITH YOUR DS???"
For the record my DS is beautiful, alert, likes stimulation, a bit small but growing fine, just likes to be close to his mummy (breastfeeds little and often, and comfort-sucks a lot) and gets ever so slightly grouchy when overtired
Have you tried carrying him in a sling? My DS loves his sling as he can be close to me and also see what's going on and I can do things (like housework, going for walk etc - yesterday we went to the pub!) that are interesting for him to watch while wearing him.
He has actually got a bit better lately, which might or might not be due to the sling. Who knows.
Know what you mean about other babies in the post natal group, but I get the feeling that most mums with high needs babies somehow feel they can't take their DCs out so don't attend these groups unless baby sleeping soundly in car seat!!! so don't worry I am sure you are not as alone as you think!