Why has our mortgage in principal amount gone down so much?

[Pickleball]

Ideas I have as to why…

Recently moved into MIL house (3 months ago) to save for new home and mortgage in principal amount looks drastically smaller since we ran the figures last year while renting.

I have given up a £10k pa pt job but have a second job that got a payrise and dh had a payrise that led to almost recovering the £10k job so I’m not sure why it’s so much lower than last time I ran the numbers online.
I’m imaging it may be not living in the same address long enough?!

Dh also turned 40 since the last time we ran the numbers through the bank not sure if that affects it as well.

you’re part time op…. unless you are very high earning… it’s very unlikely this will have had a material impact on the mortgage you can get esp given

your husband’s income more than makes up for the drop
and
you got a pay rise

and… the real biggie

You children are no longer at private school!

So you sold up and moved in with your finales. Presumably you have all the equity from the property in savings?