It was too late, and most of them were dud programmes which would not repair anything, like those presented during the sejm of 1744, when most of nobility theoretically supported auction of army, the problem is they believed that projects which were intentionally designed to fail are good solutions to the problem, and even backed off from this when Prussians began spreading pamphlets saying "hurr durr this is absolutism, absolutism bad, Frederick II is an ally of Poland and protector of freedom". PLC didn't make any sense since the beginning and was very lucky state.
The biggest disaster for Poland was the mix of a giant nobility and lack of hereditary succession. If the nobility had been smaller the king would have been a in better position to convince or browbeat them into his idea or elect his son heir. If the crown had been hereditary the royal family could have slowly accumulated land and use that to fund a civil service and army. Instead they got giant nobility which kept increasing their own independence versus the kingdom, destroying any alternative power base by removing rights from everyone else and every time they got a royal family able to strengthen the central government they replaced them with a new royal family.