[whswhs]

I'm not sure I understand what you're asking.

On one hand, most advantages cost 5 or more points to improve. Earning those points takes two or more sessions of play. If a character gains an advantage in that way, I'm going to assume that they've been developing it over the full length of those two or more sessions. In fact I may ask for a narrative to account for how they got it.

On the other hand, it sounds as if you're saying that the delay from session N, where you earn the points for an advantage or skill, to session N+1, where you buy the advantage or skill, is excessively long and makes it hard to keep track. I haven't found it so. I normally end every session by awarding eeps. Then at the start of the next session I ask if anyone wants to spend eeps on improving their character. The players can usually manage to remember what they did that could justify doing so. In fact, most of my players keep track of what skills they used successfully, so that at the start of the next session they can check their notes.

Or maybe neither of these is what you're asking about?