These days, there is a product you can get at your local sports store which you rub into your glove and cook. Literally, you put your glove in the oven. Gloves are pliable within an hour or two. You still have to play catch and work it but it is playable in hours.
My Brother plays baseball ever since he was 6 ears old. He played in Miner leagues and the Dominican Summer leagues(DSL) .If you oil it up or vaseline put a baseball in it tape it up and microwave for 10 to 15 mintues .