If you would like to take it easy over the weekend, I don't think you need to hold classes (next week).
ご質問ありがとうございます。
"If you would like to take it easy over the weekend,"=「週末はゆっくりされたいのであれば」
(又は、"If you would like to rest over the weekend"もOKです)
"I don't think you need to hold classes (next week)."=「(来週は)授業を開講しなくても良いと思います。」
ご参考に。