Sleep regression

Hey mamas is anyone else's baby going thru a sleep regression? Is there a leap before the 1st birthday? Because every time I put baby down to sleep she's all good until afew hours later when I go to bed she's stands up in the cot (which we've recently transitioned to from co-sleeping) and will start rattling the bars until I get her up iv tried ignoring her afew times she's fallen back to sleep but most of the time she cries and screams she's also refusing to take naps 😔