How much and when did you start encouraging your child to do more when they didn’t want to?

I’m new to homeschooling and I’m a bit confused on how much I should be encouraging my kids to keep going if they don’t want to or to do things the proper way if they are doing it another way... My first is only pre-k age so I haven’t really been forcing anything at this point since I know there’s plenty of time and I want school to be a positive experience, but I need advise on when you started pushing your kids to do a bit more. For instance if your child is learning sight words and doesn’t want to practice that day do you let it go and allow them to do it when they want to or are you strict about doing things at a certain time or set amount per week, etc? Or if we’re teaching writing and your child doesn’t want to do it that day do you get them to do it anyway or let it go? I recently got a pre-k curriculum from the good and the beautiful and noticed that it says if your child forms a word incorrectly or doesn’t hold their pencil properly during writing you are to erase their work and make them start over. It seems unnecessarily harsh for a 3 or 4 year old, but I don’t want to encourage bad habits either. If they are doing an activity in a workbook and only want to do a certain part of it should I be allowing this or encouraging them to complete the entire thing? I’m confused because I don’t want them to have any negative opinion on school and I don’t want to rush them, but at the same time I want them to stay on track and I want to establish good habits for when they’re older. Any advise would be appreciated!