weaning help 😓😭 desperate mama

I feel horrible.. I'm 29 weeks pregnant & my baby boy will be 1 in two days . I'm ready to wean I'm beyond ready to be exact . My son is more of a comfort nurser & tends to want to nurse all night . During the day he is fine.. he'll latch  on , something will catch his attention & then he's about his business . So mainly he nurses himself to sleep. Him nursing all night has caused a lack of sleep on my end & I start a new job tomorrow.. i need help I don't want to cause him stress but I need him off before the new baby gets here or else I fear I won't want to breastfeed my 2nd child . He eats solids & takes sippy cups so no problem there! ANY tips would help 😭