It is not about number, different snakes will grow at different rate, depends on how big they are when hatching (one might be 40 grams one might be 90 grams), now fast they start eating (some might a day after their first shed, some might 8 weeks later), prey size (obviously the 40 grams hatchling and the 90 grams one will eat different sizes for a while), feeding frequency, skip meals, fasts, genetics (not all are meant to be 3500/5000 grams, etc
The important is being healthy, fed appropriately, and have good body proportions.
90% of the time I do not keep track of weight only proportions that tells me a lot more, when I do take weight it's mainly for photo comparison of certain mutations I will do a hatchling 200 grams/500 grams/1000 grams and 1500 grams pic for example to see the evolution.