Can we use "many" or the like instead?

[Seiichi Myoga]

I think we can replace ["early" in (1) with "little,"] ["long" in (2) with "much,"] and ["often" and "seldom" in (3) with "much" and "little" respectively].

(1) It is now known that babies can hear before they are born, but did you know that they can actually begin to discern their own mother's voice from as early as 16 weeks from conception?
(A. Brock, Communication, Language and Literacy from Birth to Five)
(2) The effects of weight training lasted as long as 48 hours. (D. ZincZenko, The abs diet)
(3) Your "occasionally" may be different from the next person's "occasionally." It may be as often as once every two weeks or as seldom as once a month. (J. B. Lavalle, Cracking the Metabolic Code)

Do you agree?

Thank you in advance
Seiichi MYOGA

[Arasam22]

for 1)

i'm pretty sure that little is gramatically incorrect (you'd have to use few instead, because it's talking about a number of weeks), but you could still use it (nobody would know the difference anyways). However, you would have to replace "from" with "in"

...in as little as 16 weeks...

for 2)

you could use as much, but i think that often and seldom wouldn't fit. they describe how many times you do something, not how long one thing lasts.

3)

yes, i believe that would work.

[Seiichi Myoga]

Dear Arasam22,

I appreciate your help and comments.

Seiichi MYOGA