well. the younger you teach them the better. my daughter sleeps with us just because i miss her being with me. but before that it was horrible. she hated the playpen. or anything that keeps them trapped. i started out a new relationship and i thought that we didnt have enough time together so i decided to teach her that playpens or cribs are good. i put her to bed with her bottle beside just incase she wanted it. but before that i would leave her to sleep in my bed. when she was fully asleep i would put a fan for her only at the side of me.(if hot)...(if cold) dont just put a regular bed sheet on to the bed or crib. puff it up. make sure its more comfortable then yours. and warm. when she/he is fully asleep pick him/her up and start moving them in your arms so they can feel the warmness. just like the crib. and gently put him/her down. i like to shake there pamper so they can have that vibrations as she did in my arms. at first my daughter the first time started crying. but i did it again. soon they goin to be so tired and tired of crying that they will want to stay in that place. as soon as you hear him /her waking up. wake up faster then them dont let them fully wake up. it would be horrible. cuz they would just start walkin to your bed. wake up before they wake up and give them a bottle or shake them. and sing to them or say its ok baby mommie is here. they will here you,feel warm, and are rocked to sleep they will feel like when they were in there belly. NOW im not saying its easy but most definately would work. now my daughter start crying and i say come here baby and she wont want too. she just throws the bottle at me because she is hungry. lol . but then she goes right to sleep.try it. even if it takes a week to a month. but they'll get use to it. try not to let him/her sleep over until you get him use to the routine. change there diaper atleast 2 times at night. give them food before bed. my daughter loves soup. and if she.he aint sleeping well try to wear them off thru the day. let them play, jump, and do anything thats safe.
Steps:
1. give them a nap early
2. give them a fun time.(toys that makes them hyper,songs...ect.)
3. give them something to eat
4. prepare there comfortable crib,toddler bed(make sure they are comfortable,try no to get them into a place where they feel trapped but yet wont fall.)(if you think she is crying because of you,put 1 or 2 used shirts of yours so she can recognize and think you are there.)
5.go to your bed with them,put him/her to sleep. pick them up,shake for about 3 to 5 min.put them in there place.rock them.
6. make sure they are comfortable.(if cold take alot of blankets)(if hot put fan just for her and wrap her up.
6. stick the bottle where he/she can reach it.
7. repeat procedure as much as possible.
**remember wake up before she does to attend to her/ his needs,make sure they dont sleep with bottle in mouth.
if its about the bottle, try to feed him more then drink thru the day. they only soppose to drink 4oz not 8 to 9oz everytime. so when they are use to 4oz then at night you give them 8 oz make sure its always fresh. but its all about how comfortable they are. you just have to figure him out. somtimes all they want is a comfortable warm bed as when they were in your belly. try to just wear them off thats the best advice. they are just like us. if we have lots of stuff to do then at night we crash all night and forget about things. but if we still in the mood and aint that tired we start twisting a turning, or get up for a meal. toddlers are just like US. =]