Spurs were beaten 3-0 by Nottingham Forest on Sunday in a game where Frank’s side managed just a single shot on target, which came from distance from Archie Gray in the first half.
The loss drops Tottenham to 11th place with 22 points in the Premier League, with just four points now separating them from the 16th-placed victors.
"Well, they were very gung-ho with obviously Ange Postecoglou, weren't they? We did get entertaining games one way or the other. Whereas, I think Thomas is probably more pragmatic in his approach.
"But I can't see why he would be under pressure at the moment. You've got to remember as well that Tottenham finished 17th last season.
"He came in halfway through, and one or two transfers mostly fell through, didn't they? Morgan Gibbs-White, (Eberechi) Eze, who ended up going to Arsenal. So that was difficult before you start. So cut him some slack, surely."
Frank was appointed earlier this year to try to build on last season’s Europa League success, but his appointment has been a disaster so far. Fans are growing impatient with the Dane, who many believe is not up to the job.
Having sacked Ange Postecoglou in the summer despite winning the Europa League, fans are beginning to question the decisions of the board, who are sticking by Frank even as results worsen.