Possibly, Simulacrum (ask your GM)
I have exactly the same problem as you, and rid myself of the time part by obtaining SimularcrumSimulacrum on spell level 7, and let the darned Simulacrum do the copying. (Unfortunately, this does nothing against my status of being permanently broke or indebeted from buying ink).
The logic is that it is an exact copy of myself, so it writes the spells in exactly the way I do, and we both could use them.
has half the creature's hit point maximum and is formed without any Equipment. Otherwise, the Illusion uses all the Statistics of the creature it duplicates.
There is the need for GM agreement to this, as you could argue that even though the Simulacrum shares all the caster's statistics if he makes it a copy of himself, it is not the caster, and so its spellbooks are not the wizard's. The Simulacrum also has the restriction that it cannot learn:
The simulacrum lacks the ability to learn or become more powerful, so it never increases its level or other abilities, nor can it regain expended spell slots.
You possibly could argue that the Simulacrum cannot prepare new spells for its exisiting spell slots as this constitutes learning.
Copying a Spell into the Book. When you find a wizard spell of 1st level or higher, you can add it to your spellbook if it is of a spell level you can prepare and if you can spare the time to decipher and copy it.
(Emphasis added). So if it cannot prepare any spells, no spell is of a level it can prepare, and it cannot copy spells.
However, Simulacrum is so powerful it is considered broken. My GM had no hesitation to accept the bargain and have me leave the thing at home to copy spells, rather than see it become a copy of a party member and amplify my power nearly twofold.