1 andro can’t be wet in the least.
Creatine is clinically proven to put weight on at that dose, as is 1 andro at only slightly above that dose.
However that weight is not necessarily new muscle tissue accrual.
This is likely intracellular glycogen and maybe a little bit of muscle. Intracellular glycogen can be put on very quickly in the right circumstances.
I think this is fairly normal. Assuming his calories are high, macros and training are spot on and all that good stuff, first timer on both PEDs and creatine. Definitely possible. And normal. Not the usual for sure, but nothing to worry about.
Now if you get crazy side effects or something like that I’d say that’s abnormal.
I don’t think you will gain a whole lot more but the muscle will continue to mature and harden. Maybe a few more pounds, maybe you’ll lose water and lose weight in a day or two and then weight will go up slowly after. It really depends on the user, the diet, the recovery, all that.