I had a "high maintenance" bub too - horrible reflux and she spent the first three months of her life sleeping upright on my chest. I think you do whatever you need to get through - for both your sake and your son's so no, you're not doing anything wrong in my book.

For the record, my DD now sleeps beautifully on her own in her own cot, having been put down wide awake, with absolutely no controlled crying ever used, so don't worry that what you do at this early stage is going to set you up for problems in the future.