I know how it feels, to FINALLY get your baby/child to sleep well... and then to have it upset again by something like teething or developmental changes. Arrgh, right?
Well, it's going to happen again, whenever teething occurs, or developmental changes and growth spurts. This is normal. Sleep patterns in babies and children are NOT static, and it will change much to our chagrin.
Well, he's teething, it causes pain, they can't sleep, it's uncomfortable... he's changing, he's almost 12-months old & THIS causes hiccup's in sleep too. So, in actuality, there is a LOT going on with him.... besides teething. As he approaches 12 months... this is another milestone and "change" in cognitive/physiological/developmental/motor skills too, plus at these times, they usually get hungrier too.... It's not an easy tome for them either. Plus, sometimes at this stage, "night terrors" also occurs. Another phase that disrupts sleep.
Hmmm, so then what? Well, imagine you teething and having pain & stress? Would you want your Hubby to just ignore you? Or would you try and soothe yourself and want Hubby to offer you some solace? What if Hubby told you "I'm not going to help you because I don't want to hear you grumble or get too used to my consoling you! You have to deal with it by yourself- just go to bed and be quiet, I can't sleep. Shhhh."
Teething for each baby is different, and their threshold for pain varies too. Perhaps give him something cold or frozen to knaw on? That's what my kids liked. It's just a hurdle that will ebb and flow.
Nothing wrong with consoling him... you can also try giving him, at bedtime, some Tylenol or Motrin, to ease the pain. Perhaps this will last longer at night, versus giving him Hyland tabs every so often. (I find Motrin lasts longer and works better for pain).
Perhaps, give him a pacifier to knaw on too... my son knaws on them when he is teething. I don't have a problem with pacifiers, though everyone is different.
It's a phase... and it will pass. But, remember it's not easy for them either. AND sleep patterns in babies/toddlers/children are not static. At each age, there comes a unique set of "sleep problems" per developmental changes they go through. From, teething, gas, colds, night terrors, separation anxiety, toddler 2's and their tendency to protest sleep, being afraid of the dark and "scary" night time things, night mares, potty accidents, insomnia, life changes etc.
So, do as you feel is helpful for him.... but still keep consistency as far as pre-sleep routines, sleep/nap times, and how you put him down to sleep etc. This will provide a reinforcement of his sleep "habits" too. But yes, sometimes, if you introduce a "new" habit for them to go to sleep... it may stick and not go away. But everything takes consistency...... and patience. And yes, you CAN get him back to his "regular" pattern... although it may take patience and a transition time. Or you just let him cry it out. Everyone is different.
The thing is... sleep problems are problems for them too, not just us and OUR lack of sleep. Teething to me is an exception... because they are in distress and pain. They need comfort... in a manner that is helpful to them. He's not just crying for no reason.
Sorry for rambling, just some thoughts. I know, it's not easy... all the best,
Susan