You will always plateau nevertheless it doesn't work like that with TRT.
If you haven't done so, you need to change your training program to be more strength specific. Low reps, good rest intervals, never train to failure, do heavy lifts. That's kinda it + the diet ofc preferably surplus calories. This done properly and you will progress. Your T levels are only one factor out of many.
Also you need to understand that without ai or serm you've considerably raised your estrogen levels which after time will negate the effects of testosterone,to say it very bluntly.
All the best.