I started my Lacy the day that I got her. She is 11 months now. I had HUGE plans for deer season....but...Ive shot 2 deer in TX and one was DRT and the other fell in within my sight.
I would start as soon as you can. You don't want to over do the training. 2 tracks a week would be fine until he gets really good and then back it down to once a week. Remember when it is hot outside to make the tracks short. Always have a special treat at the end, something that you NEVER give him such as a piece of that heart or liver that you saved. When you run out of deer blood, substitute beef blood. I always put a deer leg at the end of my tracks and let Sadie chew on it for about 5-10mins before taking it from her.
I avoid Dick's and hope they fold.