Spurs have amassed a squad capable of challenging for the Barclays Premier League title this season and that strength in depth has enabled Redknapp to chop and change his line-up when necessary.
Youngsters and fringe players were mostly handed their chance to impress during the club's failed Europa League campaign, while Redknapp made 10 changes for the 3-0 FA Cup third-round victory at home to Cheltenham.
That does not help Dyche when it comes to planning his tactics ahead of the fourth-round clash at a sold out Vicarage Road, and the Hornets boss admits his side must focus on matters closer to home rather than what their more illustrious neighbours do.
"It's hard enough to know everything about Tottenham with the amount of players and the amount of quality they've got," Dyche said.
"It's always awkward planning against a side who can change it in so many ways. They can play so many different formations with the players they've got and, of course, their main thing is to be equipped for the Premier League and to try and be a real force, and that's what they're becoming.
"They could change it at will and that does make it difficult, and that's why we have to concentrate a lot on what we do, that's going to be really important."
Dyche added: "It's a tough task. We're under no illusions, the power Tottenham have now as a side. In the Europa League they changed their team with seven or eight players and were still a real force.
"But you go into every game planning accordingly to try and win it. Our main thing is to give a performance and once you give a performance, who knows?"
Redknapp will pick Tottenham's team and be in the dugout for the FA Cup encounter despite his absence from training this week as he contests two charges, which he both denies, of cheating the public revenue at Southwark Crown Court.