Was Mian Muhammad Nawaz Sharif suddenly made the Prime Minister in 1990?

In this regard, Mian Muhammad Nawaz Sharif Sahib says that many people hoped that Jatoi Sahib would become the Prime Minister and that is what Ghulam Ishaq Khan Sahib wanted. I know that. Ghulam Ishaq Sahib had made him the caretaker Prime Minister for the same. Even Mirza Aslam Baig had the same hope that Jatoi Sahib would become the Prime Minister. I have learned this from my own sources. But when the result of the election came before Ghulam Ishaq, he changed his mind and thought that it would not be appropriate for us to make Jatoi Sahib the Prime Minister again. Because the result is in favor of Nawaz Sharif. The Establishment was forced to accept this. Ghulam Ishaq was the first person to express his thoughts and ideas freely and after listening to his thoughts Aslam Baig Sahib also changed his opinion and thoughts. Although they all hoped that we would make Jatoi Sahib the Prime Minister, this is now an internal matter which I am openly saying. Ghulam Ishaq Khan, after seeing the mandate, changed his mind that it was no longer possible to make Jatoi Sahib the Prime Minister.