Thanks for everyone's replies here!
I haven't made any changes yet as things have been rather of routine at all the last few days. I think DS is seriously close to cutting his first tooth, and possibly having his 4 month growth spurt too, so he's been very grouchy and unsettled. He's never really cried that much, but we've had a few screaming sessions that have left me a bit worried and stressed. He wakes up anything from 5.30 in the morning wanting to play and doesn't seem to be quite as quick to go to sleep when I put him down. His cues also seem to have virtually disappeared - he never seems to yawn but just seems to become instantly exhausted and start furiously rubbing his eyes and fighting with me...he's a right little puzzle!
Fiona, your routine is really useful, thank you! I'm going to give it a try to see if it puts everything back into place. My main obstacle at the moment is that we have to take my DH to work at about 8.30am, and pick him up again at about 5pm, so something is always affected. Need to tweak it all a bit.
At the moment DS seems to want to stay awake long enough for a 3.5 or 4 hour routine, but still wants to eat on a 3 hour routine...
Anyway, I'll let you know how it goes...
Thanks
Mama
xxxx