So at Parents' Evening it became clear DS has made a mistake in only taking 1 science. It is clearly where he has his natural ability. It was raised that he re-start another science for S4, which will then allow him to Uni to study his favourite science (where you'd need 2 sciences in total, + maths). But how hard is it? My instinct is to do it now rather than wait for S6 to crash higher, but the system has changed so much, has anyone (or your DC) done this? Thanks!