Still waking every hour - help!

[Huncamuncaa]

3 months old. Has been waking every hour for almost 2 weeks. Reached the end of my tether! Baby is not ill, happy in the day and a good weight.

I'm fairly certain its because he cant get to sleep independently without me feeding him. Tried encouraging him to do it. Wont take a dummy of any kind. Hates being rocked, patted, hushed etc. Anyone have a solution??!!

With my first we sleep trained him at 6 months. It worked well and hes slept through ever since but this one is too little to be left to settle alone. However I am not going to make another 3 months before I address it!

Also wondering if we should put him in his own room? I know it goes against advice but I have asthma and often cough at night. Wonder if there would be less night wakings without me?

I'm not expecting him to sleep through but currently I am not getting a longer stretch if sleep than 45 mins. Even 3 wakings a night would help me!