I presume that you've decided you'll agree the induction? (Obviously, in case you don't know, you don't have to, and you won't even be 42 weeks at that point, so you could agree but push it back).
I'm 40+5 and in the same boat. No. 3 and definitely the last. With the stress that both my previous ones were quite late and the hospital moved my date forward at the 12 week scan against my wishes (the phrase 'computer says no' was actually used!!) so I'm really scared I'll be facing induction in a week or so.
I hope you are holding up ok. Are the older ones at school or pre-school or do you have them with you? Can you rest? Eat 17 pineapples just to feel like you are doing something?