tl;dr version: if you weaned a toddler, did you have to deal with any engorgement issues? do you have any tips?

I have a weeklong business trip coming up next week, which means it's also time to wean lo... She's 21 months, and I only nurse 3-5 times/day, and I don't even know how much she gets, but she LOVES it and we dealt with tons of supply issues and worked so hard to get here that I hate being the one to end nursing. I really, really wanted her to self-wean but she hasn't yet. I haven't pumped since August and she's off bottles, and I definitely don't want to bring my electric pump with me, so this is going to be it...waaaaaah this is also the first time I'll be away from her overnight....

Since I don't think I have much supply anyway (we skip sessions from time to time anyway without too much discomfort) I'm hoping it'll be okay/not too uncomfortable for me...?

Did anyone else wean an older child sort-of-cold-turkey like this? I mean, I really don't think I have much supply anyway...Should I bring a manual pump? Or just expect to hand express a lot? Any other tips? I'd love to hear how it went for you!