It's actually increased in sales and streaming since the debut week. It started at #7 on the general chart, then went to #3 and then #1 for two weeks. Tears has only just dropped out of the top 75 after almost six months on the chart (it's down from #73 to #86 in its 25th week, and it's stayed at #86 in the midweek chart so will probably stay in the top 100 for its 26th week). I'm surprised the album isn't coming sooner, to be honest. Their momentum is great at the moment.