Each must in poker, there comes a point when it starts to do very much deposits again lost the Deposit. I wanted to know the history on this topic and as someone who struggled with this.
If you follow good, strict BRM, you shouldn't have to be making frequent multiple deposits.
If you want your BR to last longer, then increase your BRM requirements. So, instead of having 100 BIs for MTTs, have 200.
Another thing to consider is your skill level. If you're playing the $3 MTTs with a $300 BR, but you're a barely break-even player at the $1 MTTs, then you should consider dropping down to the $1 MTTs or lower until you can beat them. Just because you have the BR or can deposit enough to play a certain limit doesn't mean you have to. Especially if you can't be the limits before it.