Recently my 6 month old is waking more often and seems less happy in the next to me we have. Often she has wiggled herself into the side or diagonally across it from one side to another. Could this mean she has outgrown the crib and needs to go into a cot? I have the cot and have ordered a mattress but hesitate to make the switch if this is likely not the problem as wake ups will be harder to deal with when she is in the cot.