Hmm I'm okay with anyway ya'll decide to translate them
I guess maybe translate the words that work equally as fine in english like grandma and grandpa, but words that you feel aren't properly conveyed with the english "equivalent" can be kept in JP. So maybe a JP/EN mix?
Idk, in the end it's whichever is best and easier for ya'll! Thanks again for translating such a fluffy (literally) and wholesome series!