I had a spell exactly like this 2 years ago and it was very tough! Facing redundancy at the time too, so that helped me get pretty sorted.
The thought of no income made me sit down and write a spreadsheet with a budget of all my spend
monthly: house and bills, fuel
annual: van tax, insurance, service, tyres, house maintenance, holidays
etc.
I can see where all my money goes (pretty scary!). I total that all up, divide by 12 and stick that away each month with a bit of a buffer.
Week to week I feel less well off but no surprises when the van needs 4 tires or we want to go skiing.
It's pretty OCD and not for everyone but you never know, could be a tip that works for someone else?!