If I were you, I would not "second-guess" your body, i.e. go with what your body is "telling"/indicating to you via its Bowel Tolerance reaction, i.e. if it wants more, it can use more [and will be able to absorb more]!
Yes, I have gradually increased from an intial Bowel Tolerance [20 years ago] of 10 to 15 grams of ascorbic acid per day to my current Bowel Tolerance of 75+ grams per day [all in health, not illness]. I believe this has happened primarily because I have cleaned out/up my GI tract [via the steady daily Bowel Tolerance doses].
I use ascorbic acid tablets, Joe, although you can typically find the powder/crystals for less money [gram-for-gram]. Also, the powder/crystals typically require from 20% to 30% less dosage to get the same Bowel Tolerance effect [vs. the tablets].