Is it possible to compose a semantic core in parts, step by step?

Question

Search Engine Optimization

For example, a women's theme with three branches - recipes, health, fashion. In turn, the recipes are divided into Salads, Sweets, Meat dishes. That is, the structure of the site, as it were, is and will not change. May I start by compiling the core of Sweets? Then meat, then salads, etc.
It's just that there is an opinion that it is necessary to collect the entire core for the entire site at once. But I do not quite understand why, what is the difference?
Can I only promote sweets, then move on to other sections?

Answer 1

Of course you can. There is no difference.