I've used the pen twice now-much easier than the syringe (I had a lot of needle anxiety). My concern is this-I find the button on the top kind of hard to push. Today I did it two-handed after not being successful with one hand (I have kind of small hands). I guess they have to make it sort of stiff so that you don't accidentally trigger it. Does anyone have any tricks to make it easier to press? Once I press down, I'd like to just get it done but I haven't been able to just do it right from the start.