If you’re in N. Illinois, I would say only a day or two at this point. But every year is different- I found 35 pounds or so in the same spot last year and this year I’ll only take out 9-10. Some years will just be bad overall because of freezing or drought conditions leading up to and during the season.
I used to live east of Des Moines just outside of Maquoketa, that’s where I was born. Best mushroom hunting ever when I was a kid, the Dutch elm disease had just gone through and we used to find paper grocery sacks full of huge yellows.