it's early days (yet)

US /ɪts ˈɜrli deɪz (jɛt)/
UK /ɪts ˈɜrli deɪz (jɛt)/
"it's early days (yet)" picture
1.

まだ早い, まだ初期段階だ

it is too soon to know how a situation will develop or end

:
We've only just started the project, so it's early days yet to predict its success.
プロジェクトは始まったばかりなので、成功を予測するにはまだ早い
Don't worry about the results yet, it's early days.
まだ結果を心配しないで、まだ早いよ。