Patience is a virtue.
If we can be real for a minute; There will be good months and there will be bad months. I think the worst thing to assume is your channel will constantly continue growing in subscribers, only to be dissapointed in having a bad month (or whatever period of time) of gaining nothing.
I had a great month where I went from 20 subscribers to all of a sudden, booming to 60 subscribers. All in under one month.
I got cocky and thought, "Okay! My goal will be 100 subscribers"
The next month, I didnt gain any subscribers at all. In fact, I actually lost one. It was the worst feeling of my YouTube time so far because I had high expectations of thinking I would continue to grow.
After the month ended though I did start going up. Currently at 77 subscribers and I lowered my goal to 80 before the year ends. Two more days

Hahah
Patience is a virtue. Just continue doing what you're doing and let it all come naturally. You're not doing anything wrong, it's just naturally a neutral period of time.