I would not recommend to try memorize them. Make sure you know your memory items by heart. The one in cruise 2 degrees up and 80% n1 is important to know. You don’t want to go 5 degrees up and climb power at high altitude... At lower altitude in clean configuration pitch 2 degrees up and 60% N1 you will be safe too. With experience if you pay attention to the pitch and thrust setting during flights you will have an idea. Sometimes I play a game in my head and try to guess what will be the pitch and N1% when I level off. Saying that, all you have to do really is to follow the memory items if required or just maintained the same pitch and thrust setting at the time of the failure and ask the PM to give you the pitch and N1 setting. I know by looking at the QRH procedure it looks overwhelming but it’s not that bad really.