Any secrets on sucking the belly off of a "mature" one

[beefmasterboy24]

Ok, I have my first (and last) lamb for our county fair in 30 days. I took him to a jackpot show and learned that he is too deep. Go figure considering he his 15 months. He is solid as a rock and as long as a train down his top and both judges said that was his only flaw except that his top is too plain, which he is extremely fat in his top but the 100+ Tx heat will burn it off. Any secrets on taking the belly off of a grandpa?

 

[Ms Ray]

if it a hay belly just cut back on hay, give a small handfull each feeding