1. In a gradual manner
   - gradually, bit by bit 
2. Proceeding in steps
   - stepwise

1. One thing at a time
   - bit-by-bit, in small stages, piecemeal, stepwise

See also: gradual

Encyclopedia: Step by step

• shiver
• shivering
• shivery
• shiznit
• shlemiel
• shlep
• shlepper
• shlimazel
• shlock
• shlockmeister
• shmaltz
• shmear
• shmegegge
• shmo
• shmoose
• shmooze
• shmuck
• shnook
• shnorr
• shnorrer
• shoal
• shoaly
• shoat
• shock
• shock absorber