I recently moved my horse to a new yard. He's 12 years old and normally has a lovely temperament and is nice to ride. However although he seems really happy in his new yard, the only problem is turning him out in the morning is getting harder. He walks around the stable when I try to change his rugs and fidgets when tied up. Walking to the field he's very keen although doesn't pull... He doesn't respect my space and will shove me when I'm trying to open the gate. He doesn't like to stand still when someone's holding him at all. Once in the field he's really chilled and has always been easy to catch! Any advice with his barging and standing quietly would be much appreciated!