Q said TRUST SEESIONS because Trump was saying it.
When you do a timeline of what was said when, you see that Q followed Trump. When Trump turned on Sessions, Q went silent about Sessions.
POTUS will often give people a chance to prove themselves. He gave Sessions that chance and after a time, he couldn’t wait to fire Sessions but he had to make sure in 2018 the Senate was secured for him (Sessions had friends in the Senate and knew who was on the take) and within minutes of confirming it was secured, he fired Sessions.