Does anyone have there babies birthdays with in a week or two or each other (different years). Would you recommend it?

I want to start trying and if we got pregnant right away my son and the maybe baby would be a week apart and my husband is worried about how sharing there birthdays would be through out there lives.

my boys are Jan 20 Jan 25 and Jan 30 there different years 04 06 and 11 I usually make a party for the older ones together and my little one alone