Adjusting volume to 2 HI days

Agree with the 5 days/wk issue, and in fact people I see at the track (professionals) have PT available MWF although mostly training 4 days a week (MTTF).

But if someone is doing HI 3X/wk plus tempo 2-3X/wk and the load is too great (don’t know if that’s the case here), what do you cut–HI or tempo, or both?