Filling in this maternity allowance form is driving me insane.

I don't know what date I will go on maternity leave because I planned to work as far as I could so I just rang them and they said to send the form you have to provide a date or they can't process it and if I wait till I decide to go on mat leave then send the form they are currently 6 weeks behind in processing them so I wouldn't get anything for 6 weeks.

If I just put my due date on the form but baby comes before the date I can't use this form I would have to fill in a different one once she is here and again they are 6 weeks behind.

They don't make it easy do they?! I also have 2 weeks holiday to take at work which I was going to add to my leave but dwp said I can't do that because the dates will be wrong?!

Ahhhhhh my brain!!!