It's gotten cooler lately, so I started walking back and forth to work again.
I've been eating a lot of white rice lately, but I went back to brown rice because I gained weight.
この場合、次のような言い方ができますよ。
ーIt's gotten cooler lately, so I started walking back and forth to work again.
「最近涼しくなったので歩き通勤に戻した」
ーI've been eating a lot of white rice lately, but I went back to brown rice because I gained weight.
「最近白米ばかり食べていて太ったので、玄米に戻した」
ご参考まで!