Questions about spouse visa application

I’ve been living in Japan for 4 years now. Soon I’m going to marry my Jp bf. And as my bf suggested ,after marriage I’m going to apply for spouse visa as I’m thinking of changing my job too. I want to know do people apply for it just after getting married or we need to wait for a year or so?

What documents do we need? And what’s going on with this visa fee situation recently is it better to apply in April ?

Thanks in advance! (I don’t want to hire a lawyer pls)

by That_Rope_4935