I have a 1 year old and I work from home. My in-laws are coming for a few months and don't help out at all. how should I plan the day now

atleast it is already clear that your inlaws d not help out so there are no surprises there. You know your routine at the same time you know what extra will need to be done so you can set aside a specific time for your work and let your inlaws know that you will be pre-occupied at that time everyday. Your baby's schedule and routine should not be tampered with as far as possible. Speak with your husband to have additional hired help if need be. I am sure he will understand given that he knows how his parents are. You never know,you might be pleasantly surprised if they decide to help out with the baby atleast!