When deciding on how to allocate time, we shouldn't assume that each committee member has to ask a question. In committee, we operate on a party basis. Given the composition of the committee, a certain number of seats are taken up by each political party and it's the responsibility of the Bloc Québécois, the Liberal Party and the Conservative Party to manage the time allocated to their respective parties.
If each political party is allocated 10 minutes and each member gets two minutes, it's manageable, because you manage your own time. However, we needn't think that we have to wait until everyone has spoken to go to the next round. It's up to each political party to manage the time allocated to it.