Firstly it would be a good idea to fill out the money makeover template (see other threads on this forum).
Questions & Suggestions:
1) What is your monthly expenditure like? Do you have any big optional expenditure such as a sky dish or lots of take aways?
2) Is there any way you can do a limited amount of work from home to generate income - can you mind another kid etc.? Do you have any qualifications?
3) How many cars have you? If you've two, consider cutting to one.
4) Can you switch credit card to take advantage of an interest free period whilst you try to deal with it?
5) After paying all bills etc. what are you left with each month? i.e. do you spend less than you earn?
6) I can see you'd want to keep the savings incase of emergency, but as long as you are earning more each month than spending i'd encourage you to use at least some of the savings to cut the overdraft or the credit card (depends on interest rate)
7) As much as it might be miserable - could you possibly work a part time job in the evenings when husband is home to mind kids, maybe in a bookies, restaurant etc... I'd encourage you to do this until you clear the "emergency loans" of the credit card and overdraft - it would also teach you not to live beyond your means

8) Is there anyway you could get a family loan (parents, siblings) to get rid of the short term debt. Obviously this should be done on commercial terms (pay them a nice return)
9) Perhaps the best advice - cut up your credit cards, you cannot obviously afford to have them at present.
10) As you are facing a 20% drop in overtime income, I think you should set yourself a goal of cutting expenditure by 20% ASAP - switch to Lidl, Aldi, Tesco Value, stop Sky if you have it, reduce to one car if you have two, reduce to one night a week out if you exceed this, buy cloths in pennys, dunnes, etc...
11) I think your going to have to have a very frugal Christmas and no holidays or breaks for the foreseeable future.
Without more details its hard to know what else to suggest. Read other threads on similar topics, and don't dispair; at present you are meeting all obligations and have recognised that there is a problem.
Just to make things clearer can you fill in the blanks here? (Along with filling out the money makeover template)
Gross Income: 4,000pm
Overtime: 800pm (after drop)
Total Gross: 4,800pm
Net: XXX
Less Expenses:
Mortgage: 1,400pm
College Loan: 400pm
CC Min Repayment: XXX
Overdraft Interest: XXX
Cars: XXX
Bills: XXX
Food: XXX
Going Out: XXX
Misc: XXX
Surplus: XXX