Ah the memories, I had a just turned 3 year old and gave birth before the bathroom was finished. We bathed Ds2 in the kitchen sink 
Then the bath went in (Dh and I were installing it) and there are photos of Ds1 in the bath, Ds2 in a baby bath that sits on top of the bath sides, and the last row of tiling to the bath missing as that is the last row you do.
I remember feeling overwhelmed and sick of mess and dust. But I also knew what it would look like in the end. You have to keep that in mind when it feels like it is too much.
There are photos of Ds1 helping to paint a newly plastered wall with a mist coat and I am 8 months pregnant. The sofas being shoved into the middle of the lounge so the plastering could take place. Ds1 saw it all as a big adventure. I tried not to lose my mind 
Luckily for us no structural work but total gutting of house top to bottom, new bathrooms, kitchen, boiler, redecoration, new flooring. Totally worth it, then of course we moved here and did a kitchen extension, landscaped the back garden, garage conversion, new boiler, new windows, sofits, facias, gutters, flooring, etc etc.
This is our stay here till the children leave home house so there is only the en-suite left to gut out.