i would be getting some advise asap, the revenue will love you when they pop along, if you have registered for vat recently they will for sure come out to do a first inspection.
You should have an accountant by now maybe ask there advise on a part time book keeper if your that far behind.
I do mine daily so there is only a small handful of invoices to deal with, bank account on a app so any monies going out i can record daily so at the end of the month i am not scratching my head why i took a few quid out here and there.
Sometimes we are all guilty of being a busy fool, ie spending all the time saving money here and there and then having to give it all away to an accountant as we didnt do the basics ourselves, been there done that got the gold badge.