Stimulant medication

How to reduce effects of stimulants?

Roughly 4 months ago diagnosed, was put on vyvanse which was tapered up in dose and I am currently on 60mg (2, 30mg pills) 25M.

I am wondering how to reduce the negative side affects of stimulants, mainly so the increase in heart rate, prior to starting medication my resting heart rate was 63BPM, currently my average resting BPM is 72.

I have had 4 alerts apparently on my Fitbit between beginning of Jan to where we are now for a resting BPM of 125-136; whilst just sitting down.

I’m wondering if there are any ways can counteract this increase in BPM, my next port of call is to speak to my doctor; but before taking that step I just wanted to see if anybody had experienced similar side effects and how/if they subsided