Not sure how helpful this will be but I have an 18 month fall.
I went for extreme organisation and had a huge smug textathon the day I finally managed to get out of the house before 10am.
I think it helps to accept that all that lovely control and bonding time you have with the first one isn't going to happen second time around - but it doesn't really matter, it'll be fine.
Go to playgroups/meet friends etc and accept that you'll be late - getting out the house will be hard but totally worth it. Give your baby to anyone who asks if they can help. I never did this with ds1 but when ds2 pitched up it made things so much easier - other mums wanting a cuddle, leaders at playgroup, friends, anyone. Doing everything one handed is all very well but why struggle?
I couldn't leave the toddler alone with the baby so toilet trips were a two or three person event except at weekends or if I could ask someone to help if out and about (never did this with ds1 when he was a baby).
My toddler got the same dinner as me and we ate while I bf the baby. I batched at the weekend for the first few months so I just had to reheat - DH had to take them so I could do this (he could have cooked but I was happy to say bye bye to the wee buggers by then ).
Ds1 always got read to while ds2 fed if we were at home - we all cuddled up on the sofa so he wasn't left out.
I washed myself at night so I always got a wash - mornings were too hectic.
I slept when I could - my mood is shit when I'm tired and my DH was never home so time to myself was sacrificed for sleep - so worth it.
I didn't bath them at the same time. I did the baby in the sink with the toddler watching, got the baby ready for bed then took them both upstairs to do the toddler's bath, leaving the imobile baby at the door so they didn't get wet. Get the toddler washed and into bed stuff then read bedtime story while feeding the baby. Got them both into bed then had a wash myself and went to bed.
Oh, and ds1 brushed my teeth while I did his :-).
You'll be fine. Good luck.