As you have a final order with time limited spousal maintenance (at a pretty low rate, I add), unless you have something which has changed the landscape significantly in terms of the finances since the date of the order you would most likely not succeed in a variation for a nominal award I'm afraid. You can't just go back to court and ask for a nominal order, you have a clean break ordered and a judge will not undo this without very good reason. Variation applications nearly always fail, in my experience, as the court is generally adamant that the final order should be the final order.
I'm also afraid that homeschooling would not count as a significant event, in terms of going to ask for a variation.
I'm afraid that your ex husband's liability to support you financially ends in July 2021, so what happens in the future is not his responsibility. I don't mean this to sound harsh, but that is what a clean break order means.
Of course there will always be a child maintenance liability, if you are the main carer for your son.
I hope that this clears up things for you.
I'm aware that you were perhaps hoping for something else, but I do have a duty to be honest about the legal framework.
Do remember that I can only give you my opinion.
Another lawyer may have a different opinion. If there was a black-and-white answer to every legal problem there would be no need for anything to ever proceed to court!
I am glad to help.
Hopefully, I have answered your query in a way that is simple and easy to understand.
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I am happy to answer any specific points arising from this.
Please be aware that my answer is based strictly upon the information you have given me.
If you still need any points clarifying, I will be happy to reply because the thread does not close. In fact, it remains open indefinitely.
I am always happy to answer any further questions you have on any new thread in which case, please start your question with, “ For PLCLEGAL only”.
That only applies to new threads, not this one. You have me exclusively on this one.
Take care and stay safe.