is it bad to take 3 sittings of sub tests?

i will have taken 3 sittings of the sat subject tests (different tests each time) and two sat1s. is this bad in any way? do colleges prefer one shot 3 tests?

Doesn’t matter, if they’re different tests each time. However, carefully consider the pros and cons. Are you going to take one, one, and one? If so, your time might be better spent grouping two or three of them up, for example, to minimize the number of Saturday mornings you have to spend at the testing center.