You'll feel more comfortable and the process will go more smoothly as you dress and undress your infant more frequently.
Avoid twisting or moving your baby too quickly to avoid overextending his arms or legs or putting him in any uncomfortable positions.
Any shirt's neck should be comfy, and the legs should be long enough for him to extend his legs.
Make sure that any buttons or decorations on your baby's garments are properly sewed so that she cannot remove them.
Dress your infant in as many layers as you are, with an extra layer on hand in case your baby gets cold.
Lay a blanket down to cushion the surface.