Why won't my 7w old sleep after bath time?

Hi,

ladies my 7w old refuses to go down after his bath. He stays (happily) awake for the following 3 hrs and then sleeps 5/6hrs followed by 4 hours. This has been going on since 3w

His routine (from the paed) which he follows quite happily:

7.00 Wake up to feed for 40 min and back to sleep
10.30 Wake up to feed, top and tail, play etc and feed again
11.45/12.00 Back to sleep usually for about an 30min then I put him in the carrier and he falls asleep
2.45 Wake up to feed for 40 min. Falls asleep.
6.45 Wake up to feed 30 min, bath, then 120ml bottle of breast milk.
8.00 We try to put him down but he cries if we don't hold him and give him the dummy. He is WIDE awake.
10.30ish he passes out so at 11 I wake him and feed him. Ge then dies 5-6 hours. (if I don't wake him he will sleep another 3 and then wake and then do another 3 hour sleep so I rather maximize the 5-6 he sleep for when we sleep too.

Is he sleeping too much? Too little? Why the awake spell at 8pm???? And is this just temporary do you think? We have tried the dark room, white noise cd, swaddle etc.