I helped my disabled, unable to work friend with her divorce and an exh who despite her name being jointly on everything apart from his cash only business and him paying off their mortgage. He was going to be the one owning the family home as he has paid for it.
He too was declaring earnings well below his expenses
I learned so much about divorce law. Friend kept the marital home and an amount of money which in total equalled 60% of the marital pot
I would try to get the court date adjourned Even if you can’t I would start reading now about what the law states around whatever he is trying to claim.
Even take a day or 2 off work so you can spend the day preparing.
Read up on court cases with similar claims
I would ask for company accounts (you can get online previous years accounts through HMRC website and him to provide a year/6 months if his personal bank statements and list of expenses and evidence of how they are being paid. If he is claiming that he has only a small income then he needs to show it and how he is spending his money,
If his family are “loaning” him money i.e the amounts are transferred to his account with the word Loan in the reference or are they just transferring him money where there is no expectation of repayments
Remember op the law is there to read. The only difference between you and the solicitor is they know every aspect of particular laws off the top of their head
You have to find them, read them and understand the different interpretations and make a note of them for reference
My friend ended up fighting SS to keep her children and by the time it got to family court she knew more about the laws involving SS than any SW or their solicitor.
Dont be afraid, Read carefully what your ex is asking. And read the laws and cases surrounding that type of claim. Including the claims that failed and why
You can do it.