You can check the schedule of vaccinations available in Japan in multiple languages.
The schedule currently posted is the April 2021 version; it may be updated in May or so for the April 2022 version, so check back if you need it.
〇Vaccination Schedule (Website of NPO KNOW★VPD! Protect our Children)
English, Chinese, Indonesian, Spanish, Tagalog, Nepali, Vietnamese, Bengali, Portuguese, Burmese, French, Arabic, Turkish, Farsi, and Urdu
〇You can check vaccination information for children at the Yokohama city’s website. (Automatic Translation)