I want to say "I don't have time to study and sleep. (or the other way around)"
勉強と寝る時間がありません
Is this correct?
Do I need to add の after 勉強?
If I switch the order,
寝ると勉強の時間がありません
I know that a verb cannot connect with a noun using と, so in this case, do I change it to 寝る事 or simply using the noun form such as 睡眠?
The most common way to say it is 勉強する時間も寝る時間もありません。. 勉強したり寝たりする時間がありません or 勉強と/や睡眠の時間がありません also works well.
As for 寝ると, と is not the particle to connect nouns (i.e., "and" in English) but a conditional particle, thus, it means "If/When I sleep".
The most common way to say it is 勉強する時間も寝る時間もありません。. 勉強したり寝たりする時間がありません or 勉強と/や睡眠の時間がありません also works well.
As for 寝ると, と is not the particle to connect nouns (i.e., "and" in English) but a conditional particle, thus, it means "If/When I sleep".
It's not redundant but necessary to use 時間 for each verb, as I said it's the most common way in Japanese.
The comma is not necessary, but there is no problem with using it.