"But it is where we're at. And that's where we find ourselves and we just have to make sure that we get the best out of the players.
"And as I mentioned, we've got a very talented group of players. We've got a number of different options. So, it doesn't change my focus, we want to win these next two games."
England will now need to win both of their next two matches to confirm their place in the inaugural ICC World Test Championship final.
"We'll look at a squad that is available to us and make sure that we're very happy with the XI that's selected to make the most of this pink ball under the lights. And, hopefully, that will be the right team to take advantage of those conditions," he added.
While senior spin bowling all-rounder Moeen Ali is returning home despite snaring eights wickets in the second Test, Root said pacer Jofra Archer was back to training and is available for the coming matches.
"Yeah, Moeen Ali has chosen to go home. It has obviously been a very tricky tour for him. If players feel that they need to get out of the bubble, that has been an option. That decision has been made. Hopefully, he feels better."
Moeen had contracted the virus just after arriving in Sri Lanka for a two-match Test series before the team's tour of India.
"He really had a difficult one for him having to deal with COVID. Been in his room for such long periods of time. That just got to a point where he wants to get out of the bubble. And that's absolutely fair enough.
"It wasn't an easy decision for him, but one that I absolutely respect and understand," the England skipper added.
On Archer, the skipper said: "Yes there's a possibility. He is back in training the last couple of days, and available for selection."