I have a 2019 Prius Prime that is almost 3 years old since purchase. Up until about a month ago it would indicate 29 or 30 miles when fully charged overnite using the 120V charger. About a month ago it said 26.4 miles instead of the higher value, and this week it's saying 25.6 miles. The drop is a bit disconcerting. The weather has been normal for summer, perhaps around 80F during the hottest part of the day. Is this drop in capacity anything to worry about?