gel changing consistency

I started HRT 2,5 weeks ago with estrogel from the pharmacy and I just noticed two days ago that my estradiol gel is changing it's consistency. Before it was normal gel like but the past days it seems really watery running down my leg. I haven't changed the way I apply nor the way I store it (just in my living room at room temperature 20° C).

It is really weird since it's drying super fast too because it will spread out a lot. I was wondering if anybody had similar issues or any tips for me how I can get the normal gel like consistency back, because I try to apply it in a thicker layer.

Any help is much appreciated.