Rig veda sandhyavandhanam-a question about Brahmayagnam

[Mayuran]

Can someone explain this please? For Rig vedis (Asvalayana sutram), is it wrong to do Brahmayagnam after morning sandhyavandhanam? I am not home during daytime to do maadhyaniham. So I do only the morning sandhyavandhanam, and follow it with Brahmayagnam. Some people say you can do Brahmayagnam only after maadhyaniham. Is it true? Thanks.

[vaasturam]

Swamin,
I am also an office goer. I do madhyahnikam just after 8 am and continue with Brahma yagnam before going to office. Hari Om.

[Mayuran]

Sir, Thank you.