You may want to report your last post and have it removed by MNHQ because you have included your email address. It is safer to click "Message poster" and send a PM to someone with your address, rather than making it public.
You probably know this, but there are no specific subjects you need to cover each week. With 4 and 6 year olds, I'd recommend following your children's interests and going for depth rather than breadth. One of the advantages of home-educating is that you do not need to follow the National (or any other) curriculum so you can do things as they come up or that are specific to your family.
For example, if you have family elsewhere in the world, it might be important to you to learn the language of that country.
When my DC were that age, it was important to us to do craft and cookery so that the DC knew internally from a very young age that making things has intrinsic value. Craft and cookery involve a lot of practical mathematics. We also did a lot of reading but almost nothing that would look like schoolwork.
Many long-term home-educators can assure you that this is not a risk - with only two children, you have plenty of time to cover the formal requirements for exams (for example) without having to go through the repetition that schools need because they are working with 30 at a time.
FWIW, both my DC started Open University at 13-14 and DD is about to start her second year of a law degree.