Sew the button properly with waxed linen thread and on a shank and it shall not fall of in the first few years. You should really learn how to use a thimble. I'll try and find a correct video. Keep the following in mind. Keep the thimble on the middle finger. Have the eye of the needle against the thimble where your fingernail is. Hold the needle as close from the tip as you want the stitch, i.e., you want a 1/4" stitch, then you hold the needle 1/4" from the tip. Only make slight movements with the middle finger in the way the finger moves, i.e. up and down, no sideway movement. Use the wrist for the most of the sewing movement. Catch the needle after the stitch and lock the thread with your ring and little finger. Hard to describe, but easy to do.