That's OK, once you're finished putting insulation and drywall up, you go buy more insulation and start making acoustic panels.

There is something to be said for stopping when 2/3 of the drywall is up.

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8