The phrase 'how much time to devote' is correct and can be used in written English.
It is typically used to ask how much of something someone is willing to give to complete a task, or how much time someone is going to spend on something. Example: "I'm not sure how much time to devote to studying for the test - do you have any advice?".
Paul Friedman, executive vice president of ABC News, said deciding how much time to devote was up to the networks.
It is that the central government still dictates to all schools exactly how much time to devote to each subject every week, down to the last minute.
But there is an evident tension about how much time to devote to the terrorist acts versus the decade of costs and consequences they provoked.
Subjects were asked to decide how much time to devote to collecting firewood from a local forest, which degrades local water quality, and how much to unrelated pursuits.
Every TV newsroom has debated how much time to devote to covering Donald Trump's presidential campaign.
It's ultimately up to you how much time to devote to listening, how much time to devote to other efforts to learn the language, and how much time to devote to your language overall.
A relationship's quality seems to depend on how much time we devote to it, and since time is limited, we necessarily have to distribute what time we do have for social engagement unevenly.
It is impossible, however, to overstate how much time evangelicals devote to memorizing, reciting and ruminating on each "God-breathed" syllable of Scripture.
But British beauty brand Escentual surveyed British women to find out just how much time they devote to beauty rituals... and how much they hate doing them.
I'm an awful political junky and I've had to cut back a lot on how much time I devote to keeping up with the ever-changing political landscape.
It's an interesting work, yet I have reservations about it: no matter how much time you devote to building the perfect landscape, with fine weather, even an island all to yourself, it is almost impossible to feel at home in this shifting, anonymous universe.
