Can we exit to Malaysia and return to Thailand on the same day under the DTV rules?

Ideally, you should spend a couple of nights outside the Kingdom between entries.

However, at some borders and in some circumstances, same day re-entries should be permitted but I wouldn't do it each time.

Once is OK but not on each bounce.

When the Myanmar borders are open, such as Mae Sai or Mae Sot, especially the latter, only a same day stay in Myanmar is allowed without a visa. Hence a same day bounce at that border is all that can be expected and is permitted without issue.

However, currently those two borders aren't open to foreigners, but should they reopen at some point in the future, expect the old status quo to return.

you can come back when you want because you have a visa only those people who go to border for visa exemption need stay one or two days

I just flew to kl and back today for my dvt

Btw depending if your in the south of Thailand (Phuket or koh samui) …the weather this week is going to be horrendous

Might even be better to spend a few days in Singapore , go to universal studios etc

depends on the border you cross down there.

Some are telling people who bounce themselves that you have to spend the night in Malaysia and can come back the next day

IF you go with a service that bounces people out and back they have it set up so you can get out/back the same day