I did 3 months with DD, even the bf support worker was at a loss with us!
With DC3 I managed to pump for 6 months as baby was NG tube fed.
Top tips!
Hands free bra - to me it was essential for full time pumping.
Double breast pump - both breasts being pumped makes let down easier, stimulates more milk production, makes pumping quicker.
Milton tub or cold water sterilisation - I bought two Milton tubs for sterilising the pump parts ( keeps for 24hrs) and milk collection bottles.
Also a 5ltr plastic tub to store extra pump pieces/bottles etc ready to use.
It's much easier to use than having to microwave only 6 bottles or half the pump pieces at a time.
Make sure you get the correct flanges for your nipple size + one size up as I found my nipples stretched over time slightly.
Before & during breast massage!
I used to warm up a wheat bag or water bottle, put the hands free bra on, lay it on my chest for 5 mins, then tuck it under one arm against the side of my breast and massage the opposite side for 2 mins, then switch it under the other side and after that turn on the pump whilst massaging each breast alternating or from underneath simultaneously.
You need to massage from all sides, there are you tube videos to show you where to start.
It really helps drain the breasts efficiently which will increase your production.
You need to drink 3ltrs of fluid a day, mostly water tbh.
I pumped in the summer of 16 heatwave and if I didn't drink enough I saw the affect on my milk production.
I started with 8 pumps per day for the first 5 weeks and cut down to 5 by 3 months, but I always kept my 2am pump because it really helped maintain my output, there is a hormone released during this time of night that helps maintain milk production if stimulated by bf or pumping.