we had a 23 month age gap so my tips are

-invest in a good sling, having hands free to control a toddler when shopping is a must! Also having an unsettled bub in a sling allows you to comfort them and still do things when at home
- keep a supply of books next to the place you feed, I bfed and DD1 liked attention when I was feeding DD2 and I could hold a book one handed and she could snuggle while I fed dd1
- use the tv/dvd wisely. Save it for when bubs is unsettled or you need to do something then you wont feel too guilty using it
- do what you have to do to survive the first 6 weeks. If that is minimal cleaning and cooking who cares. If it means staying in your pjs all day doesnt matter
- ask for help if and when you need it, accept help even when you dont (you never know if you may have a sleepless night ahead of you)
- take time out even if its only for 20 minutes to have a shower, moisturise and destress once a day without interruptions (read: ban DH from letting interruptions happen unless someone is bleeding or something is on fire!)
- make any needed changes in your toddlers routine as early as possible before baby arrives eg moving into a big bed, toilet training
- use the dryer if it saves you 15 minutes of hanging out and briniging in washing
- let your toddler have time to interact with baby, they may be a little ruff but unless bubs is distressed try and let the toddler have a good look/play with bubs.
- accept that your toddler may have little intrest with baby for sometime as babies dont do a lot of interesting things, but take up mummy and daddy's time and cry
- read some books a bout new brothers/sisters
- have one on one time with toddler when baby is sleeping and let your toddler know its their 'special time'
- if both kids are asleep, prepare dinner then sleep/rest/read a book!

- go with the flow, if somethings not working dont stress do what you need to do keep going and minimise stress

Good luck, after the first three months things settled down fairly well for us and I felt 'normal again'