Saya memeriksa jadwal belajar sebelum tidur.

In Indonesian, meN- is a common verb prefix that marks an active verb.
So:

• periksa = the base/root idea check / inspect
• memeriksa = to check / am checking / check(s) in a normal active sentence

Because the subject saya is doing the action, memeriksa is the expected form in standard Indonesian.

A learner will often see both in casual contexts, but memeriksa is the more grammatical full form in careful standard Indonesian.

Here, jadwal belajar is a noun phrase, and belajar modifies jadwal.

It means something like:

• study schedule
• study timetable
• schedule for studying

So in this sentence, belajar is not functioning as the main verb. The main verb is memeriksa.
The structure is:

• Saya = subject
• memeriksa = verb
• jadwal belajar = object
• sebelum tidur = time phrase

Indonesian often puts nouns together like this, where the second word explains the first.

Indonesian often leaves possession unstated when it is already clear from context.

So Saya memeriksa jadwal belajar... will usually be understood as:

• I check my study schedule...

If you want to make the possession explicit, you could say:

• Saya memeriksa jadwal belajar saya sebelum tidur.

That is more literally I check my study schedule before sleeping.

Both are possible. Omitting saya after jadwal belajar is very natural when the owner is obvious.

It can suggest either, depending on context.

Literally:

• sebelum = before
• tidur = sleep / sleeping / to sleep

So sebelum tidur is literally before sleeping or before going to sleep.

In natural English, the meaning may come across as:

• before bed
• before going to sleep
• before sleeping

All are good ways to understand it.

Because after sebelum, Indonesian commonly uses the simple base verb.

So:

• sebelum tidur = before sleeping / before going to sleep
• setelah makan = after eating
• sesudah mandi = after bathing

In this kind of time expression, the bare form is normal and natural.
You do not need to add meN- here.

It is actually quite close to English here.

The sentence structure is:

• Saya = I
• memeriksa = check
• jadwal belajar = study schedule
• sebelum tidur = before sleeping

So the pattern is basically:

Subject + Verb + Object + Time phrase

That is very similar to English:
I check my study schedule before sleeping.

Yes. Cek is very common in everyday Indonesian.

For example:

• Saya cek jadwal belajar sebelum tidur.

This sounds more casual and conversational.

Compare:

• memeriksa = more formal, standard, a bit more careful
• cek = very common, casual, everyday speech

Both are understandable and natural in the right context.

Sometimes yes, but it depends on context.

Indonesian often drops the subject if it is already known. So in conversation, someone might simply say:

• Memeriksa jadwal belajar sebelum tidur.

But by itself, that can sound incomplete or like a note, diary style, or a response in context.

If you are making a full standalone sentence, Saya memeriksa... is the safest choice.

By itself, it can mean either. Indonesian verbs do not automatically mark tense the way English does.

So Saya memeriksa jadwal belajar sebelum tidur could mean:

• I check my study schedule before sleeping (habit)
• I am checking my study schedule before sleeping (current action, depending on context)

Usually, context tells you which meaning is intended.

If you want to make it clearer, you can add time markers, for example:

• Biasanya saya memeriksa jadwal belajar sebelum tidur. = I usually check my study schedule before sleeping.
• Sekarang saya memeriksa jadwal belajar. = I am checking my study schedule now.

Yes, it is natural and correct.

It sounds like a clear, standard sentence. A native speaker would understand it easily.

A few natural variations are also possible, depending on style:

• Saya memeriksa jadwal belajar saya sebelum tidur.
• Saya cek jadwal belajar sebelum tidur.
• Biasanya saya memeriksa jadwal belajar sebelum tidur.

But the original sentence is already good Indonesian.

Not without changing the meaning.

Compare:

• jadwal belajar = study schedule / schedule for studying
• jadwal pelajaran = class schedule / subject timetable / lesson schedule

So:

• belajar focuses on the activity of studying
• pelajaran refers more to lessons, school subjects, or classes

If you mean your personal plan for when to study, jadwal belajar is the better choice.
If you mean a school timetable, jadwal pelajaran may be more appropriate.

It attaches to the action memeriksa, not to jadwal belajar.

So the meaning is:

• I check the study schedule before sleeping

not:

• the study schedule before sleeping

In other words, sebelum tidur tells us when the checking happens.

Yes, definitely.

You can say:

• Sebelum tidur, saya memeriksa jadwal belajar.

This means the same thing, but it gives more emphasis to the time expression.

Both are natural:

• Saya memeriksa jadwal belajar sebelum tidur.
• Sebelum tidur, saya memeriksa jadwal belajar.

The difference is mainly focus and style, not core meaning.