@ReLOa - it’s always difficult when they are at nursery (more so if you have only one wage). Unless you earn hundreds of thousands the additional cost of childcare is naturally going to be very noticeable. Also really feel for people with young kids currently as everything has risen significantly in cost in past couple of years. Even the best planning of finances ahead of having kids wouldn’t have had you anticipating all those rises at once.
We were easily keeping to a budget of £60 a week for food in 2021 and currently having to take more care on one of £100 a week. It’s definitely challenging for everyone now vs then.
Rubbish though it is now it will be worth sticking it out. In a few years you will no longer have anything like those childcare costs so your disposable income will massively increase. Our wraparound/kids clubs/school trips/holiday childcare averages to about £280/month for each of our kids (they do 4 paid clubs a week in term time, 7-8 weeks in holiday clubs & have a trip away each most years with school or one of their clubs). It might be more where you are but it will be a lot less than £1,600. Also you’ll likely see your salary increase while your mortgage hopefully stays a similar cost, which will help immensely.
For now you could claim Child Benefit for this Tax year and pay back half with your tax return that would give you an extra £50 a month & you’ll have to look at if you can make any savings in all your regular spending to help until the nursery years are done.
Go through all your direct debits and see if anything you could cancel/downgrade options to save money and call and ask internet/mobile provider for a better deal if not on a fixed term or shop around and switch. We’ve recently done our annual review and I got Virgin to switch us to a £20 deal they had for new customers for broadband, moved OH to a new mobile provider, switched packages for Disney+ & cancelled Netflix/Kindle subscriptions. It’s saving us £55/month vs prior year. Most years I find there is something worth tweaking.
Beyond that, rubbish though it is, you just have to accept these are very expensive years and you won’t be able to do as much but keep in mind it’s temporary and that it’s worth keeping going because once those costs are gone you’ll feel the benefit of your salary again.