Grain jars sterilization for mushroom growing in instant pot

For pressure canner (such as presto brand) with 15 PSI, sterilization time is 90 minutes (1 hour and 30 minutes). For instantpot - 2 hours. I have instantpot, but I use pressure cook option on high for 2 hours and 15 minutes, some people do 2 and a half hours with instant pot