I haven't seen this mentioned. Not only are the Heat losing, their margins of victory when they win are shrinking, and margins of loss when they lose increasing. That seems ominous. A team that is blowing people out and losing close games on alternate nights is a team that just needs to gel, as they say - smooth out some rough edges, change a few things around so that the close losses become close wins. That's not what is happening now.
Thousands of people are analysing what is going wrong - I don't profess to understand it very well - but the trend is not good.