To add to what people are saying--and they're saying valid stuff!--the vast majority of readers sub to multiple comics on Tapas. Sometimes they start focusing on just 1 or 2 comics for a while, then come back to yours and others. And what most of them do is go through a "catch up" period. A lot of the time, readers will wait to read a comic that has updated multiple times so that they have more to read in one sitting. I know people who read my stuff consistently but at the rate of every 3 months, instead of every time I update. That way, they have 6 updates to read (which is usually 12 pages in my comic.)
Don't get bent out of shape! Just keep at it. :}