Ok so more practically, what we've done the last few months in prep for surprise baby number 3, which on paper we couldn't afford...
Resigned ourselves to staying in a too small, 2 bed house for at least a year. Ds3 will stay in with us until 12/18 months. We're currently on a massive sort out and organising drive to make the most of every inch of space we have.
Sold a shit load of stuff and made about £1k...bags of clothes (years worth from the attic), toys, tents and ornaments and two printers we don't really need, car manuals for cars we no longer have, curtains, bed sets...just stuff that I never would have bothered or got around to selling if we didn't have to. I was amazed by just how much stuff we had stashed that could be sold.
Dh is working Sat and Sun nights delivering for a local takeaway. It's shit, he's knackered but he's taking an extra £100 a week net which is going in the bank.
I realised that if you have x months full paid maternity leave, they don't count it on your salary...it's your average weekly earnings that count, which is the two months payslips before you're 25 weeks. Luckily I have unlimited overtime at work...through Dec and Jan I worked every single hour I could...all day on both of dh's days off, every evening Dh was at home...pretty much lived in the place for 8 weeks straight. Which again, was shit, and I was knackered. But I did about £1k net extra of overtime each of the two months, which means for my 6 months 'full pay' mat pay, I'll have £1k extra a month...£6 k up, saved.
Between Dh's extra job, my ot, selling stuff, we have enough to see us through until the baby's 2, with childcare and extra costs.
What will happen between 2 and 3 when school starts I have no idea, but I'm 6 months pg now and we've managed to clear 2 years worth which I never thought would be possible...
Anyway, hope some of that helps.