Congrats on your new horse.! As for bonding, that really takes time, and I mean time, like months. It takes just hanging around with horse, feeding horse, taking horse out and helping horse through scary situations.
If I were you, I would look at a bond as a by product of everything else that happens, not the goal that you TRY to create.
If you have consistency in the way you discipline the horse, if you have clear expectations of good behaviour, if you provide leadership for him , you will get a bond eventually. It is very important that you don't look at it as trying to almost "buy" his love. Horses are not children or dogs or cats. If you want to make your horse happy, secure and happy to be around you, you must show him that you KNOW what he needs to do and will show it to him.
So, start off right from the beginning with disallowing him to get too mouthy on you. Maybe not hand feed unless your horse is polite about it, but keep treatst to a minimum and I would not use treats WHILE doing the mount up training. Only after the horse has stood for you to mount. If you give treats partway through, the horse will comply only to the point of the treat receipt and will be completely focussed on theat treat and not on listening to what you are telling him.
I agree with another poster that you start the mount up and if he moves, you move him, briskly. Start again. And again and again. Better to put in the work the first time and have it out of the way.
I also feed a little when I bring my horse into saddle him but just a little and he is done by the time we are done grooming. That way he has his head up and is paying attention to what I am doing, not prone to being startled with his head down.
Once you are in the saddle, if he steps before you are ready, back him a step or two. Again and again and again. However, when you get him to stand for a wee little bit, YOU ask him to move off (try to do this timed before he gets to the point where he can't stand still a sec longer, so he is released and it's YOUR idea that he move out.)