Don't have time to reply to everyone, but I just wanted to say Cori, don't panic. I've done a few bedtimes on my own now, and found that the only way to cope is to basically put DS1's routine first, and make DS2 fit it. Here's my "system for coping" - We have a seat in the bath for Fraser, so they both go in the bath together, and DS1 "helps" by pouring little cupfuls of water over F's tummy. Fraser then gets out and I dry him and dress him in the bathroom on the changing mat. Then he gets infacol and half a feed while I sit on the loo and sing with/talk to DS1. Both seem quite happy with this at the mo... Then DS1 gets out too, wrapped in towel, and we all go into our room, where DS1 lies on the bed to get dry, and Fraser gets to lie on the pillows. Basically this is exactly DS1's routine from before with another person added. Then Fraser just gets left, either on our bed or in his cot, while I read to DS1 and sing a song with him before sleep. Once DS1 is settled, I finish off with Fraser in his dimly lit room! I've found it definitely works to leave Fraser and put DS1 to bed as though Fraser doesn't even exist, as DS1 would hate me to be feeding Fraser while doing "his" bedtime routine. THe first time, Fraser cried in his cot the entire 10 mins I was putting DS1 to bed, but at least the door was shut..!! The second time, he just cooed to himself in our room and didn't seem to mind much, as he was near the light which he finds fascinating. I guess this will just become the norm for him when DH isn't there.
Sorry, very very long way to say that maybe tomorrow try something similar. I figured bedtime was when I just HAD to make DS1 feel like nothing much had changed and he still got his mummy time. When DH puts DS1 to bed when he's here, I also take a couple of minutes and put F down to go and give DS1 a big cuddle all of his own, on his own in bed. Even if it's just 2 minutes, I think they do appreciate it.
Good luck tomorrow. I'll be thinking of you - I'm doing it tomorrow too, so 6-7 pm let's remember eachother and keep our fingers crossed!
Xx