Simply because it is a new school term 新学期だからこそ

I keep it in mind to spend time relaxedly in the morning of the new school term if possible.
新学期の朝はなるべくゆったり過ごすように心がけています。

Both I and the son want to be used to the change of environment and the climate little by little.
私も息子も、少しずつ環境や気候の変化に慣れていきたいです。