That's a good thing in general, you have to do it for yourself in the first place! Keep going on, challenge yourself everyday and put in your mind that you will become better and better with time,exercises, studying... be patient, enjoy your work even if it's not perfect (nobody is perfect! ahaha~) and carry on. You'll go far, no matter if slowly or quickly!
Don't worry about it, is not only a problem of subscribers... someone could unsubscribe, and it's fine... but lately Tapas is messing with the algorithm of the site. Not your fault.
Yes, please, don't stuck your mind on the number of subscribers, that's a phase we ALL go trough... my post here was referring to a problem with this site and I was searching for other users feedback about this.
I don't complain anymore about subscribers because I love my comic and I will continue it no matter what, sometimes I keep an eye to the statistics because it's totally normal being interested in our readers activity.