Hello again!
We all like to play piano pieces through from start to end. However if we are learning a piece by playing it all the way through then it can be counter-productive.
When learning a piece and encountering difficulties which cause you to slow down or stop, it’s important to isolate those difficult bits and practise them separately. Try repeating the difficult bit using hands separately or playing slowly with hands together. Do this until the section becomes more easy to play.
This method ultimately saves you time and helps you to learn the piece quicker!