You have been giving meditation an honest try. I trust you are noticing that your body may be asking for its meditation time. Can meditation become something as deeply entrenched in you as brushing your teeth? Still paying attention, still returning after every distraction. It is normal for your level of focus to fluctuate. Can you savor it all?
In case you’d like to release tension from your shoulders before meditating, you may try:
Guided meditation below, when the recording comes to an end, take as long as you wish to enjoy the silence and to savor the effects of the practice.