[troubletb]

I think the problem is he is just so young. I think you are doing a great job. I don't believe in complete crate training. I do however keep mine in the crate at night and when I go out. I let them out when I get home, 1 of my three is NOT TRAINED. Bell is (but she is almost 3yrs) Lilly is 6 months and 90% trained but she likes to use a wee wee pad. I moved the wee wee pads outside and when she needs to poop she sometimes does not hold it, she goes where the pad use to be. I scold her and put her outside on the pad, She is getting better. Since your baby is so small why don't you try the litter or wee wee pads indoors. If you want to leave him outside his cage then keep him with you at all times, (In your arms, not on the floor) don't put him down unless he just went or he is on the spot you want him to go. He will learn, just remember he is tiny.
Your doing great, just keep it up and have patiences!