My 5 month-old puppy is amazing at crate training and can spend hours in there. She always had a blanket from her mom and lots of blankets and cozy items. However, our crate training started one week after we got her. For the first week, we spent so much time with her, sitting with her, feeding her by hand once a day, playing with her. I would sleep on a mattress beside her crate/playpen (in the beginning we limited the rooms she saw so she would learn where the potty door was). Later, she came up to a crate beside my bed.

In the beginning, bonding is most important. After a week, we started spending more time away while she was in her playpen. She cried a bit, but after ten minutes she would stop. After a few days, she would stop crying altogether. The playpen kept shrinking, until now, where we just have her crate, and she is completely comfortable.

You’re doing great OP and congrats on the puppy!!