What should I do if the effects of glabellar Botox wear off in less than two months?

I understand that glabellar Botox usually lasts for 6 months.

It hasn't even been two months and I'm already frowning like this.

You can tell just by looking at the photo that I'm really sulking because of the frown, right..?

I got glabella Botox because I heard it works really well, but I'm so sad ㅜㅜ Is there anyone else whose Botox wore off quickly like me?? ㅠㅠ

I've heard that getting Botox too frequently isn't good because you can develop resistance if you don't stick to the schedule... I'm really worried about what to do. So, I'm asking about the timing!

First of all, I got Botox for both my glabella and forehead. At first, it felt really tight, so I thought the effects would last a long time, but as soon as that tightness wore off, I found myself frowning like that.

In this case, I am wondering if I need to get Botox again, or if I should follow the scheduled interval and then get a higher dose.