It sounds really hard.
Have you seen a debt advisor to help you. They can do amazing things to help reduce and clear and make debt manageable and most important, to make you feel in control again. There is no judgement but help that makes a real difference. Look for Money Advice Service or Debt Advice.
If your furniture is almost paid off, you’ll be a bit better off in 2 months. Key will be to not be tempted to buy anything else on credit/instalments, even if you really feel you need it. If you need something, instead look on eBay for 2nd hand or go to one of the furniture charities where there are often almost new items for a tiny fraction of the price of new or even free.
It’s the money funnelling into what you owe that means it’s all gone within a couple of days isn’t it. It’s really good one of those payments is about to end and doesn’t have months or years to run. That’s an achievement that you can be proud of...you’re almost at the end of that.
There’s no quick fix as you know. Childcare fees will reduce over time. Training can allow you to earn more but takes time.
Don’t decide to give up work. Keep going and know this really awful phase won’t last forever. Childcare does end or drop substantially.
Are there any more savings to be made on utilities, phones, food shopping? Are you entitled to any more help and benefits?
I really think going and talking to a free debt/financial advisor would help you. They can almost always find some ways to help you with budgeting and particularly to reduce outgoings to debt, so that life feels better. You need to loook into it and book to go. Feeling miserable won’t bring change, but making an appointment and talking it all through is the first step to progress. If you get onto that next week, see someone next month and they start helping you, things could be much better in 4 months time. Or in 4 mo this time you could be in the same position and still not have made the call.
Good luck. .....it feels like a tunnel you can’t get out of. People can help you get out.