I agree that is full on! I struggle to add exercise into my routine, especially when we have little sleep and the kids are sick/teething (seems to be constantly here ATM). You are doing such a great job with everything whilst DH is working - that is a massive effort.
Generally I walk for ~45mins/1hr with the pram each day. I try and go swimming twice a week (this is a new thing) but any more than that and it gets way to hard to manage and I get too tired and run down. I am also in bed early as I find that I get too far behind otherwise but both my girls flake out early as they get up at a ridiculous hour and often don't sleep well day or night.
My house is cleaned once a week but often is messy for the rest. I struggle to fit in the
TBH sounds like you have got things very well sorted - and are doing a fab job. It is really hard when the kids are sick and you have extra stuff on. Be kind to yourself!!!!!