They will probably at least slow themselves down at minimum, though and that will matter. Their majority is already narrow and there are good odds of cutting into that majority further or potentially even flipping the house if we're very lucky. They had house speakership fights for a while in 2022 with a narrow majority

They are already having some signs of potential infighting in the senate where some Republicans are trying to claim McConnell is holding a "coup" against trump by having earlier senate leader elections (McConnel is not running for senate majority leader so it's a bit more competitive)