Confused about bedding😕

My nanna bought my son some beautiful bedding the other day, it included, quilt cover, bed sheet, pillowcase, he won't be using a pillow till he's older but at what age can I put him in crib with the cot quilt? Or should I never till he's a lot older? I have no idea😂😂 he's 4 months old the now and he's still in Moses basket being swaddled but curious for when he's older. What age can baby sleep with cot quilt ?