1P-LSD didn't work as intended. Help me understand what went wrong...

I dropped 150ug 1cP-LSD on the 28th of December. Yesterday (3rd of January), I ate 2.5 blotters of 1P-LSD (375ug) and barely had visuals and literally 0 mental trip. Actually, more of an anxiety it was.

​

My question is - why didn't I trip basically?