H Falcon
Sorry to hear about your situation.
I am just coming to the end of mine. I separated with my ex-husband 2 years ago. I went to a solicitor to see what he had to pay for as we had a joint mortgage and bills. I was advised that he had to either pay child maintenance or half the mortgage, not both. Child maintenance for him is £130 per month and the mortgage is £700 per month, so would be £350!! you can guess which one he went for.
so no as long as you are paying maintenance, you don’t need to pay any more, unless you want to.
hope that helps. Happy to answer any other questions.
Lou x