Then you wasted threads.
WST notice + two other common shards = t3.
Since most of my alts just go for muscle alpha, just take the ITF shard reward
During one ITF aprox 4 shards drop so you can make the other, as well as maybe get your first and second vet levels.
use threads for t1 and t2
use shards for t3 and t4
Sure, 32+ shards seems daunting at first but you do not have to worry about it much. The T3 alpha is a huge boost in power. T4 alpha, not so much. it can wait as your stockpile of shards grows while you work on other incarnate stuff. waiting for 4 notices of the well from WSTs is not as bad as you think.