1週5日目 やめられないことはない
Condition・emotion・limit
接続：Vない＋でもない
not really not; somewhat
注意 / Note：This is a double negative: still leaving the possibility but not making a strong assertion. Shades are often reserved.
比較 / Compare：Same article: 〜ないことはない／〜ことは〜が／〜と言えなくもない. These models are often mistakenly chosen for each other — carefully read the 接続 and nuances above and then decide.
よく出る形 / Common form：動ない形＋でもない。How to say in a roundabout way, keep the meaning. Or go with 分かる・思う・気がする and with 〜次第では.
彼の気持ちも分からないでもない。
I also don't necessarily understand their feelings.
条件次第では、参加しないでもない。
Depending on conditions, I can also participate.
そう言われれば、そんな気がしないでもない。
Having said that, it seems to me to be true.