Routine

my babe is almost 3 months and we have no real day routine, he gets up at the same time and we go to bed at the same, but his wake times are all over the place, i can never figure out when to nap him, he fights it soo much and will cry and cry in the crib, my sister and husband say if he's really tired he'll go to sleep, but i think he hates the crib, I'm at a loss he needs to crib nap for daycare, any suggestions or relatable feelings