Follicle sizes help

Im just finishing my first medicated cycles which I knew wasn’t going to work based off follicle scans. But I just took a pregnancy test at 11dpo and negative.

My question is my follicles didn’t seem to be the right size. On my cd11 scan they were 29mm (right) and 11 mm and 10mm (left). I had my lh surge the next day. My cycle is starting to return to its normal ovulation day which is cd12-13. But since I’ve had b2b mcs, im wondering if my follicles aren’t mature enough.

Is there something I can take to help my follicles mature more before ovulation? I’ll obvs ask my doctor but they are stretched thin and take awhile to communicate.

Edited to add: on letrozole 5mg.