To answer the title question in very short and uncomplicated: they won’t. In slightly more complex (but not much), due to the increase of intervals described by other posters, it won’t ever be 26 items every two hours, unless you have 52 items in groups of 26 that you intentionally fail every time they come around, as soon as they come around, since the lowest SRS interval after the wait for the inital review is ~4h.
That being said, you don’t have to do reviews (or lessons for that matter) straight away as soon as they are available. you can wait for them, and they will build up into bigger sessions as more items become available and join the passively waiting review cue.
As far as I know radicals have reduced SRS intervals, and so do levels 1-3, so as you can see you’ve now had new content unlocked by the 24 items in guru (found here). There’s some more great info in The Ultimate Guide.
Also, since it’s your first time posting:
\textcolor{MediumPurple}{\huge \textsf{Hi}} {\huge \textsf{@tuzmusic}} \textcolor{MediumPurple}{\huge \textsf{!}}

It’s great to have you here!
If you haven’t already check out the Forum Guidelines and the Wanikani User Guide .
There’s also tonnes of things on the forums to help you on your way such as The Ultimate Guide, The Ultimate resource list, and API and Third Party Apps.
If you have any questions, check out this thread; but if this doesn’t answer your questions, feel free to create a thread like you’re done here, or email The Wanikani staff.
Good luck, and I look forward to seeing you around!