new coil spring settling time ?

[RapidRide2]

Hello i just installed a set of new belltech 1'' lowering coil springs in attempt to start chasing down my nasty 1-1.5'' lean on the pass. side ,,,even with a low fuel tank. Anyway I was hoping that these would put me where my original worn 76' springs were at,,, however they actually sit about 1/2''-3/4'' higher. I have only driven the truck for about 10 miles. My question is,,,,,, how long does it take for new coil springs to settle?????? And does anyone think i will get a 1/2'' drop in doing so??????