Rangers are four points adrift at the foot of the Barclays Premier League and launch a pivotal month numbering six fixtures when they host Aston Villa in Redknapp's first home match on Saturday.
It had been assumed owner Tony Fernandes would fund new signings when the transfer window opens, but Redknapp said: "I'm not looking at January. It's about now. There are games between now and the window that will decide where we're going."
He went on: "If we don't pick up some points and wins in that period, what's the point of putting yourself in trouble trying to buy players?
"That way you could get lumbered with a big wage bill for next season. It's not the situation we want.
"We need to pick some points up. If we're in the mix then we can take a look at it again in January.
"I haven't discussed players with anyone - the chairman or chief executive.
"We need to win matches now. What happens in January is way off. I've not looked at targets for January."
Source: PA
Source: PA