The big move happens fairly early in the year (first price move in round three) and then it flattens out progressively, so you don't need to worry about it after about mid year in my view.
Personally I simply work on the basis that in the preseason, a typical player is priced at $5,500 per point, while during the season, they are fairly rapidly heading towards $5,000 per point ... so the latter is the number to focus on in my view, outside of when you're choosing your starting side.
Some people take the view that almost every player starts the year overpriced by 10% ($5,500/$5,000 -1), although given it applies to almost all players, I personally think it's simpler to just accept that most player prices will tend around 10% lower, and essentially forget about that and simply work off $5,000.