To build confidence, start with low x's, like he's new to jumping. Reward the crap out of him. Gradually raise the jumps, not constantly through one lesson until he's maxed out, but maybe start with x's, and then low verticals in the same lesson to get a feel for him.
Don't try to find his weakness height right away, remember you are a new team and you need to trust eachother for him to be confident in you and himself, start slow and low. If he gets bored, do some bounces, lots of gymnastics, etc. Next lesson, raise them a little more, and so on and so forth.
You build confidence and trust at the lower levels and only move up when he's 100% solid! You'll do fine.
Owner and head trainer of SE-Wisconsin Horse Care
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