I'm back to work on 7th January. I worked out a plan with my mum before she went - at the moment I bf at 6am, formula at 10am, bf at 1pm, formula at 4pm, baby rice at 6pm and BF at 7pm. Going to replace the 1pm BF with formula the week after next and then replace the 6am bf two weeks later. I'll keep doing the 7pm bf for a month or so after I'm back at work because it might help him settle a bit better into his new routine.
Because he's only taking 60-70ml formula at a time though I'm worried he might be getting dehydrated, especially as his wee has been smelling really strong for the past week which I read can be a sign of dehydration (taking him to doc next week to check though) although he still has lots of wet nappies.
I spoke to the HV again yesterday (I hate being the mum who phones them constantly) but the advice is still just to keep offering him a bottle several times a day. So I offer him the playex bottle first (he chews on it and takes about 20ml that way) and then give him the rest from the cup. The playtex bottle is really good in terms of the teat being most like a normal nipple, but I just spent another £20 on the inserts too so they're not cheap.
The HV said he should be capable of sleeping 6 hours at night now (he's always woken every 2 hours and I've always just fed him), and I think she was suggesting that I try a bit of controlled crying, but I'm totally flummoxed because if he needs to make up for the lack of daytime fluids at night, perhaps I should still be feeding him every two hours at night.
I guess my real concern is that he's not getting enough fluids anymore, but the doctor will be able to help me with that. It's so hard, especially when your natural instinct (or mine is anyway) is to let them feed all day long if they want.
I think HVs should be asking BF mums when they plan to go back to work and advising them to offer a bottle once a day from an early age. I know that's no guarantee that they'll take it later on, but it would help a lot of people avoid this situation.