Luckily, my old teaching partner and I came up with a new strategy for keeping track of elapsed time. As long as kids can count by 1's and 5's, they can do this!
Each mountain represents 1 hour and each molehill represents 5 minutes. Each single tick mark represents 1 minute. So, students count off hours, then 5-minute intervals, then single minutes. After they've reached the finish time, they can easily go back and count up the hours and minutes.
Some teachers may be using this but I don't know if everyone knows about this so I made a unit just for this skill called Elapsed Time -Mountains and Molehills on TPT. Check it out - if you have time:) Elapsed Time Using a Time Line