While you sleep, train your child, what you are really doing is teaching them what to do using techniques to reinforce their behavior. Of course, we are not talking about newborns or babies under four or five months old, because as a small child, they are not yet neurologically mature enough to learn such a skill.
Different sleep counselors offer different services and packages which you can browse at this site, and some prefer specific sleep training strategies and approaches over others, so it's time to ask questions. It's a good idea to write down your questions in advance and have a pen and paper ready to take notes.
This way you can call a few for you free of charge before deciding on the sleep advisor that best suits your family. It's okay to give your child a quick shower instead of a tub and only read one story instead of three that night. Try not to appear rushed or stressed as your child will understand and be more anxious before bed.
You can then use a portable crib to keep the crib dark and reduce the risk of distractions. If these are not an option, ask for a specific bed or bedding that is in the darkest corner or furthest from the rest.
No wonder your baby is moody! Once you get past this stage, you are not alone. This sleep regression should only last from two to four weeks. For a long time you have created a new schedule (not the one you want to keep). The point is to listen to the parents and consider the above factors and then adapt the strategy to the needs of the particular family.