in one's own time

Prepositional phrase

Taking as much time as one requires; when one is ready.

Japanese Meaning

必要なだけ時間をかけて / 自分の都合の良い時に / 好きな時に / 準備が整ったら

It's important to practice a language in one's own time to build confidence without pressure.

プレッシャーを感じることなく自信をつけるためには、自分のペースで言語を練習することが重要です。

Sense（1）

Taking as much time as one requires; when one is ready.

When they seem to have had enough time to work at the subconscious level, invite them back: "Now, in your own time, come back to the here and now[…]"