Phoenix Suns guard Devin Booker says "short memory" will help him move on from his disastrous Game 3 shooting performance ahead of Game 4 on Wednesday.

Booker shot three from 14 from the field, going at 21.4 per cent, and only made one from seven three-point attempts in Game 3, finishing on 10 points as the Milwaukee Bucks won 120-100.

The result pulled the NBA Finals series back to 2-1 in the Suns' favour ahead of Game 4 in Milwaukee.

"Short memory, just move on," Booker said when asked how when asked about his Game 3 shooting.

Booker had scored 31 and 27 points in the opening two Finals games, shooting at 48 per cent and 38.1 per cent respectively, as well as hitting seven three-pointers in Game 2.

The 22-year-old has already scored 500 points this postseason, steering the Suns to their first NBA Finals in 28 years.

Despite the momentum shift in the series and his own poor display, Booker remained unflapped.

"Just understanding the task at hand and simply you just have to be better if you want to win the game," Booker said.

"That's obviously something I want and something this whole team and coaching staff and training staff wants and this whole city wants.

"I would say it's a good pressure. These are the moments that you prepare for and that you train so hard for, what we're in right now. You have to be excited about it."

Milwaukee won praise for their defensive efforts on Booker in Game 3, but Bucks head coach Mike Budenholzer said his side expected him to be much improved in Game 4.

"I wouldn't say there was one specific thing or anything we did different," Budenholzer said.

"He's a great player, but he's human also. I think we're expecting we're going to have to be even better on him.

"We just got to be prepared for a really good Devin Booker going into Game 4."