trotting

I've been riding for about 3-4 years but since it's not that long I'll put this here. I go to a riding school once every week as my budget doesn't allow more than that and everything's been going fine, I'm learning a lot, the people are nice, and we always switch between arena work and hacks...

Hello everyone! So recently I've had some issues with my posting trot. My trainer says I'm posting too fast and need to slow my posts down, but I can't seem to get them to go much slower. Do you guys have any tips about getting you posts slower? Any advice would be appreciated. Thanks!

I have ridden from the age of 3 competitively and NEVER had this problem. My horse will not TROT over trot poles, he’ll walk them under saddle, walk trot & canter them on the lunge, walk trot and canter a single pole under saddle but any more then 3 poles he goes back down to a walk to finish...