I think I have an alcohol problem?

I really enjoy a drink, I look forward to it at the end of a busy day when cooking & having a gl of wine or just relaxing with take-out & a good movie. However I enjoy it so much, one gl of wine becomes 1 - 1/2 bottles every night or 2nd night. I know it is too much. I sometimes go to bed & wake up in the morning & can't remember how I got to bed, not all the time, just sometimes. My fiance hardly drinks so gets very annoyed & whats worse, I have a 5 month old baby to take care of. I ensure I never drink much when he's awake ie it's usually started when he goes to bed at night. A friend says I use it to relax. I know I'm doing wrong by my baby, by me & my fiance, I'm not here to ask to be lectured, I'm not here to ask for confirmation my liver is probably wasting away let alone any other bodily organs but I'm hoping someone else in a similar boat or that knows someone that has been in a similar situation can give me advice. I don't want to quit drinking, I just want to cut back. I work 3 days per week, full days & drop my son off at my retired parents house for daycare but some days they are annoyed & stressed when I pick him up if he's misbehaved, my fiance works two jobs so is usually exhausted but does try & put in the hard yards. I pick up on others annoyance so easily ie my parents frustration at my son's care for the day, my fiance being tired & not handling my son when I'm trying to rest, so I stress even more & aim to care for him myself to not out anyone. I'm trying to keep our house clean & in order & to tie up loose ends ie overdue errands etc. I admit I hate asking for help as I hate noticing the reaction or feeling it. Please help, I"m losing it I think.