BBB shouldn't you have taken the day off to recouperate? I hope you have had a gentle evening and are feeling better.
Healing thoughts also to BC's DS.
IC Hope the birthday celebrations have gone well and DH has been a bit spoilt, even if at school all day (and sometimes those are actually quite cool if it slips out!)
Thank you for all your kind words. We've slipped back into night wakings and last night DS2 was sick again so DH off work today while I drove round the county half asleep and feeling icky myself.
Scones I think I've got in last of the two-time mums, but I echo what they all say. Much easier 2nd time round, from birth to dealing with toddler tantrums. I got a basket ready downstairs full of changing items so that I didn't have to go upstairs to change nappies (for either child - it contained them for both, but nearly wrecked the lounge carpet with one badly-timed bottom explosion from DS2!) Think about how you are going to put DC2 down safely without DC1 lying on DC2, or hoovering it, as my DS1 proudly announced while using his mini dyson 
!! Get DH to make the lunch for you and DC1 the night before (and DH still does now 
so that you have got a sandwich to hand to whip out at a moment's notice for you both if you've had a bad morning/ventured out etc.. Go through your 'risk assessment' to check for dangers if you are being less observant/otherwise occupied and make sure you have the channel for CBeebies at the ready each time you feed. I've just asked DH for ideas and he says he can't even remember, which is probably a good sign. I second the accepting help - my colleague mentioned hanging DH's pants out to dry in the early days only a few days ago (and accepting that there will again be tearful days, but that they will probably be fewer)
I think the best thing I ever did was to put DS1 to bed for a nap and then bath DS2 so that it wore him out and he slept too. I then slept too and we all still sleep in the afternoons now when necessary (most Thursdays!!) and i refuse to feel guilty/like I'm wasting time. DH also did bath and bed for DS1 for the last few weeks of pregnancy, partly because I couldn't kneel, but also so that he was used to the fact that I was inevitably going to be feeding at bedtime. I also got DS1 good at doing his own shoes/coat etc.. (which DS2 can't do now 'cos he's the baby).
Finally, I think I learnt to chill out a lot more (would be completely mad if sleep issues had gone on this long the first time round, but just accept it this time) and laugh, rather than cry most of the time. There will be crazy days but there will be lots of fun (and lots more chatter, as the days I found boring with DS1 before he could talk were filled when DS2 was little by DS1 chattering to me - much less lonesome).
Sorry to the rest of you - should probably have sent a message on FB re all that lot. I'm not known for my succinctness!! 
Mous love the weird toy goings-on!
Stone DS2 is loving his scuttlebug too at the mo. Definitely a good toy. Now thinking about Christmas presents...
Time for a few exercises and a prayer that DS1 doesn't catch the sick bug!