The striker, a £32.5million acquisition from Aston Villa this summer, was subbed off at half time in Belgium's 1-0 win over Cyprus.
Manager Marc Wilmots called the forward's outing a "half performance" after dragging him off for fellow Liverpool team-mate Divock Origi.
And Wilmots hinted that Origi could replace Benteke in his forward line for the next international break.
"The contribution of Origi and (Dries) Mertens in the second half was important, because I wanted quick combinations. As a result, in the last half hour we were often dangerous," Wilmots said.
"We have now won two games in a row but this is the worst team performance I have seen and we will try to rectify the issue."
The Germany international picked up his first full cap last week and is set to play against Scotland in a crunch Euro 2016 qualifier tonight.
"I want to do more in attack and I know I can improve in that area of my game," he told liverpoolfc.com.
"I want to do much more going forward in terms of scoring goals and providing assists.
"I’m trying to bring that into my game and I’m working on it in training.
"I always try to do my best and put in the running and help out in defence. I’m determined to work hard in defence and in attack."
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Michael Carrick (centre) is an injury risk for Manchester United v Liverpool this weekend
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