Urgent help with part-time job offer

[tmpercoco]

I am supposed to start a job Monday, but I have been at home for the past 6 months with my son and don't want to leave him. I also have 2 girls 10 and 6 years. The job is only part-time and I will be leaving him for 5 hours each day. At the moment I don't need to work, but staying at home is making me depressed and I know it's not good for my son. I am a single mum and I feel I am letting him down. We cling to each other all the time, I never put him down and he never wants to be put down. Most of my days I am just sat watching tv with him while he's feeding or sleeping. Financially, I claim unemployment right now and have some months left. The problem is if I start work I will lose it and not get it back if I can't cope with the job and want to leave. The other thing I worry about is who's going to look after the girls during the holidays, to have someone watch them I will have no pay cheques those weeks. I am so confused any advice would be appreciated.
Thank you.

[Babyroobs]

If you will be on a low income, you will be able to claim childcare costa for all 3 kids, up to 70% of the costs I believe. You need to average it out over the year taking the school holidays into consideration, so that you come up with an average weekly cost. Any childcare providers will ned to be Ofsted registered.