"with much caution" is correct and usable in written English.
You can use it when you want to describe something that should be done carefully or with vigilance. For example, "He stepped out of the car with much caution, checking his surroundings for any signs of danger."
Thus, monthly administration of IVM to dogs with clinical, radiographic or echocardiographic evidence of heartworm disease is ill-advised and such treatment of even the asymptomatic dog should be done only with much caution and frequent monitoring by the veterinarian.
"Our armed forces are progressing with much caution, which means that the operation is lasting longer than first thought," said Gaetan Kakudji, Kabila's minister of state, as he spoke to reporters at Ndjili International Airport.
By nature, Muḥammad ibn al-Ḥanafiyyah was retiring and inclined to avoid partisan strife; he acted with much caution despite the support of various factions that would have made him caliph.
But with infantry — the foot warriors who since ancient times have been called upon to march across hills and deserts, carry heavy weight and bear the brunt of fighting and death — the corps is proceeding with much caution.
Cervical spine injuries are approached with much caution by emergency room clinicians.
However, these observations should be interpreted with much caution.
What does it say that Crosby treated his recovery with so much caution and now has come back seemingly as sharp as ever?
"With too much caution, you can miss out on opportunities," Mr. Vanderberg said, "especially now when everyone seems to be snatching up deals.
Afterwards the coach Giovanni Trapattoni talked of "delicious" moments from Baggio in this friendly, but such words are to be treated with as much caution as a speech at a leaving do.
It must therefore be read with as much caution as any other scientific paper.
If our associations are negative, we will react fearfully, says Ropeik, "and if our associations are not negative, we might not react with as much caution as we should".
