Since leaving Manchester City for the Foxes, Iheanacho has endured a frustrating period with six goals coming from just eight starts and 13 substitute appearances in all competitions.
The Super Eagles coach told Goal.com: "Kelechi is doing very well. I'm in touch with his coach - Claude Puel - he's a friend of mine.
"Let him now play a little bit more and I hope he does because it is not enough playing 20 minutes, even if he scores. He has to play more and I hope now he will have the opportunity to play other games and to be fit for our two friendlies."
Nigeria face Poland and Serbia before the end of March as the African nation continue their preparations for the World Cup.