Early insemination has pros and cons: Fresh, fit, cows are at an advantage with a milking robot, these cows are milked oftener, and therefore give more milk. On the other hand, every calving also gives health risks for the cow. So if your company has a lactation graph with a long peak, or over many days, then a short calving interval is less interesting than when your cows are peaking after 40 days (for example) and then quickly decrease in production.
Look at your business cows lactation curve on how many days your cows have the highest production and how long their peak production lasts.
Look at the Herd graph (the one with all those dots).
After 50 DIL the cows are marked red, is there a good excuse not to inseminate this cow?