At his age and weight, some kind of grower ration with more fiber and bulk would be better I think. Also, did you mix a 3500 lb batch of this feed? If so, it can get stale only feeding 12 lb per day. I'd get something like glu-coat to top dress it with.
I have used melatonin in pill form at the rate of 10mg/cwt for disposition. It worked. Just topdressed the feed with it. 3-5mg tablets are better than 10mg in case he sorts the feed and leaves a couple in the trough. My 2 cents. Your mileage may vary.
Not light weight or inexpensive but we got a couple of these last year. Will buy a couple more. https://www.sbcustominnovation.com/hang-on-steel-feeder/
Should be no problem hitting that weight. 2-2.5% of body weight of any 14% premixed grower feed available to you. Lots of ways to get where you want to be. Just feed him and keep the water tank clean.
I have fed and will feed again this summer the VF minerals with HEAT. Outstanding products and the benefits of HEAT and Amafirm are visible in the cattle. As for the garlic I really couldn't tell any difference one way or the other from a fly control standpoint.
Have several jolts just because that's what the local co-op sells. One is rechargeable. They work well but shafts are junk. Hard to beat the original hot shot brand for durability.
This won't help you grow any hair, but FWIW warts are much easier to prevent than they are to treat. We fought warts for a few years before we started giving a wart vaccine and booster. Haven't had any issues since.
Use a grill brick to remove the old hair. Too close to show time to slick shear now. Think about body clipping late next fall for next spring's project.
Seems to work pretty well on our meyer influenced cows. We've had several ring eyes and stocking feet. Probably not as hairy as we might like overall. We are feeding 2 now and sold one to a neighbor. 2 easy feeders, one a little harder doing. All seem to have great dispositions.
My experience is both work but the meletonin keeps them more evenly tempered. Peace pellets work pretty fast but wear off pretty fast as well. After a couple of days on meletonin they will "mellow out" and be calm around the clock. We used 10mg per day for a 11-1200# steer
A second lead held by a stronger person walking on the show side has worked for us in an effort to prevent the head lowering and butting. The chain lead with prongs makes it easier for smaller kids to keep the head up.