"Dd is 13 btw and has depression, anxiety, an eating disorder and self harms. She is supposed to be supervised 24/7"
oh hugs (((Nutcracker))) that's a hard road you are looking at.
So you need your finances to be as simple as possible. I am going to assume you are a single parent - if you aren't much of this changes - and that you don't have a lot of savings.
Your best route is for DD to get DLA and for you to claim Carers Allowance and Income Support. ESA isn't a good option as it just looks at whether you are well enough to work (and often gets that wrong for people with mental health conditions) not at the trouble you have fitting work around family responsibilities. Ditto JSA.
If your daughter's DLA is refused or she is only awarded lower rate care, you need professional help to appeal the decision - go to your local CAB if you aren't being helped by any professionals (social worker, health worker, charity specialising in eating disorders etc) already.
If you are renting, you will be able to get Housing Benefit immediately - it isn't dependent on getting any other benefits, just having a low (or no!) income. If you are buying you will be able to get help with your mortgage interest after 13 weeks of being on Income Support.
You should be claiming *Council Tax Support" immediately - if you are applying for housing benefit, this is done as part of the same claim, but if you are buying not renting then you can claim CTS now, usually through your council's website.
If you haven't informed HMRC that you have stopped work, then you should do so - at some point your child tax credits will probably increase.
I don't know how much you were earning when you were working, but if you were paying income tax, at some point (probably after next April) you will probably be due a tax refund - it won't help you now but make a note to chase it up next year.
If you have any non-priority debts (credit cards, unsecured loans, catalogues etc) then you are going to find these difficult to manage when living on benefits. But these aren't important to sort out now, first you need to be getting all the benefit income you are entitled to, only after that can you really see your full financial position and think about a long term plan. For now, you should probably opt for a short term measure, paying only a token amount to your creditors (or nothing!), see DMP. If you have priority debts, ask CAB for help with them.