Use cold, cooked rice, ideally yesterday’s. Rice firms up as it chills and the grains stay separate, which is the whole difference between fried rice and a pan of hot, sticky rice. Freshly cooked rice steams and clumps.
Get the pan properly hot before anything goes in. This is a fast dish cooked in stages, and a lukewarm pan makes it a stew.
The sweet soy on the tofu catches quickly. Drop the heat before it goes in and keep the slabs moving, because it goes from glossy to burnt in under a minute.
Lime and coriander at the table, not in the pan. Both are there for freshness and both lose it in the heat.