Grammar fix

check on

to look at someone or something to make sure everything is all right

to see or ask if someone or something is okay, especially to make sure there are no problems.

phrasal verbB1common

Hear it in context

Notice where the phrase sounds natural.

I called my neighbor to check on her after I heard about the storm.daily life
In my opinion, it's important to check on elderly relatives regularly to make sure they're safe and comfortable.IELTS speaking

Pattern: check on + noun/pronoun

WrongI'll check on to the dinner.

RightI'll check on the dinner.

'Check on something' — no 'to'.

Patterncheck on + noun/pronoun

Choose the version that sounds natural in speech.

Stiff I went to verify that the children were safe and well.

Natural I went to check on the kids.

'Check on someone' is the everyday verb for making sure they're okay; 'verify that they were safe and well' is stiff.

Words that usually travel with it.

'Check' alone can mean to look at something briefly or to examine it, but 'check on' means to make sure everything is fine or as expected.