We run a journey in late May for IP warming, but we haven't run another journey since then. We are planning to run a journey this month and I'm wondering whether the IP warming we need is still valid or since it's been too long we'll have to do it again.
Thank you in advance
Edit: Some details. The journey run for 8 days, because the audience was small (around 39k), and at the end the delivery rate was 92.78% (34,932 people), with 2,718 bounces. We haven't run another journey since then and we are now planning to run a journey with an audience of 200k.
Edit: Contacted Help and they suggested doing the warmup from the beginning. Because of a time limit we just split the sends into multiple paths throughout the day, for multiple days.