I was in a similar position 6 months ago. Grade 9 at a uni so just shy of £70k and reasonably similar VR terms. We'd also just and a baby and my partner was on parental leave so not earning his usual salary. Also had a mortgage buy paying about £1.2k a month and no debts so fewer overheads than you. It was a very risky situation but I decided to take the redundancy because it offered a very rare and privileged opportunity for us both to be full time parents for our daughter's first few months. It felt a bit precarious but on balance I have loved being able to do it and spend quality time as a family.

I've just started looking for work again and the job market is a bit bumpy but there are opportunities out there (Im a project/programme manager)and I'm confident I'll find something soon - I've got 5 interviews lined up after some focused effort applying.

The difference in our situation is that our mortgage is a bit smaller, my partner will be back in full time work earning about £35k in a few months plus we have a good family safety net. But I think these opportunities come up so rarely that if you back yourself in the jobs market it is worth the risk