Sated vampires, Always in high spirits. Options

[Aerospider]

I've just started a campaign with a Nosferatu PC. I love the character and am looking forward the different approach to runs that is due.

However, there's a problem with the numbers. Creatures with Essence Drain and Essence Loss can only store up to twice the natural Essence (i.e. 12 if unaugmented) and lose a point a month. In addition, they can burn half the Essence they drain by boosting one attribute temporarily. So a starting vampire (Essence 5) can drain 14 Essence and burn seven of them for boosts, but other than that they're limited to their monthly allowance which is to drain two points a month with one going towards a boost and the other feeding the Essence Loss. That's only 24 points over a whole year.

A single victim can supply up to six Essence points, so just three can put the vampire at maximum after which he can only drum his fingers waiting out the lunar cycle.

Although Essence Drain is about the vampire just staying alive, there are the added benefits of boosting an attribute, addicting victims and infecting victims. None of these can be done if the vampire is full.

Now consider the Nosferatu. He has a higher maximum (the wording's ambiguous, I take it to mean a maximum of 18 rather than 24) so can drain 26 Essence and burn 13 of them. But he only loses an Essence point every six months, making his annual drain allowance a pitiful four points. So after his first five victims or so he would have to wait for over a year to be able to infect someone else (as infection requires all Essence to be drained).

This makes for a quick (they are meant to live for centuries) burnout in an aspect of the Infected that is thematically and mechanically interesting. Maybe it's ok that Essence Loss is that low if it's just the bare minimum the vampire needs, but then the vampire should be able to enjoy the experience well abive that minimum in the same way that humans eat a hell of a lot more than what they need just to stay alive.

It can be solved with just one simple house-ruling: all Essence can be used for an attribute boost at any time.

But might that be too much of a gift to an already potent character framework?
What other solutions can people think of?