I don't think you can do it without at least some spotting. Ortho tri cyclen
lo is a triphasic pill, which means that each week is a different dose. The bleeding on the pill is caused by withdrawal from the hormones, so even if you start a new pack with no break, you'll be lowering your dose and will probably bleed. In the future, if you want to be able to skip periods at will, get on on monophasic pill, which has only one dose and therefore allows you to skip periods by starting a new pack.