It’s a bit clumsy, but something like this:
julia> dropends(it, start, stop) = Iterators.drop(Iterators.take(it, stop), start - 1)
dropends (generic function with 1 method)
julia> foreach(println, dropends(it, 2, 5))
(2, 1)
(3, 1)
(1, 2)
(2, 2)
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