The job resume mainly depends on what you have done before, your attitude towards work and so on. You'd better write according to the actual situation. But if you really want to change it, the longer the better. But you have to make sure that you are proficient in this job, or you will know that you are a fake at a glance after you join the company.

It is best to write down the reasons for leaving according to the actual situation. It can be said that you have to leave the company because of the actual situation of the company or the company. For example, because the company can't continue to operate or lay off a lot of people for economic reasons, or if you live in B and buy a house now, you have to leave A, otherwise others will think it's easy for you to leave. No one wants to cultivate a person who always likes to quit.