I have 50/50 custody and have traveled for work. If it comes to D try to align your business travel with your off weeks when possible and hopefully you and your Ex can be reasonable about switching time when it doesn't.
My trips are usually a minimum of 1 month up to a max of 8. I got to take the family to CA for 8 months several years ago and it was awesome. This last trip was "short" where I spend 6 weeks there. My Japan trips were both about 4 months long. It worked great when W could just take the summer off and bring the kids, but can't work with split custody.
Those durations are certainly more of a challenge, especially with a young daughter - I was thinking a week at a time - but also have to imagine similar situations have come up before. E.g., Military deployments, pro sports...etc. Do some research online to see how people handle it. There may even be case law which addresses it.
Me:39 Ex-W:37 M:7 T: 9 S:6 D:3 BD/IHS/Confirm EA/PA: Feb '20 OM1 affair ends: May '20 W/OM2 & moves out: June-July '20 W files for D: Jul20 OM2 confirmed: 9/2020 Divorced: May '21
